★ SOSA · clinics, polyclinics & medical centres
The machine is a fixed cost and the fragrance is a small recurring one. Once you have said that honestly, there is not much more to the economics
★ ★ ★ ★ ★
★★★★★
"One fill lasts about seventy-five days on our opening hours, so it is four refills a year per unit. Procurement could model that in ten minutes."
Four refills a year
★★★★★
"Four clinics, one fragrance, one purchase order. That was the entire reason we standardised."
One purchase order
★★★★★
"It sits in facilities alongside housekeeping, not in marketing. Putting it in the right budget line ended an internal argument."
A facilities line
★★★★★
"We were asked who would refill it before we were sold anything. Naming that person was the condition, and it was fair."
Named an owner
★★★★★
"Our SOP now has scenting in it: which zones, which setting, who checks it, when it stops. One page."
One-page SOP
★★★★★
"Asked where to spend first and was told seating and ventilation, then fragrance. We did it in that order."
Seating first
★★★★★
"One fill lasts about seventy-five days on our opening hours, so it is four refills a year per unit. Procurement could model that in ten minutes."
Four refills a year
★★★★★
"Four clinics, one fragrance, one purchase order. That was the entire reason we standardised."
One purchase order
★★★★★
"It sits in facilities alongside housekeeping, not in marketing. Putting it in the right budget line ended an internal argument."
A facilities line
★★★★★
"We were asked who would refill it before we were sold anything. Naming that person was the condition, and it was fair."
Named an owner
★★★★★
"Our SOP now has scenting in it: which zones, which setting, who checks it, when it stops. One page."
One-page SOP
★★★★★
"Asked where to spend first and was told seating and ventilation, then fragrance. We did it in that order."
Seating first
✓ Aangan ₹25,999 · up to 3,000 m³ (≈8,000–10,000 sq ft) · HVAC or standalone ✓ Vaayu ₹11,999 · up to 1000 m³ · one machine per public volume, not per floor plan ✓ Count the volumes a door closes. Clinical rooms come out of the sum entirely
Founder Diaries · Clinics & Medical Centres · The One-Page Scenting SOP
The schedule, written as times: night before, bins and dressing waste out and mops dried flat · T-60m housekeeping opens up and waters every drain trap and unused gulley · T-45m air conditioning on · T-30m diffuser on, lowest working setting, entrance and reception zone only · T-0 first appointment, and the level has already arrived · close, the timer stops it, and nobody switches it off by hand.
The four registers: the daily check sheet, the refill log with four dates a year, the objection log, and the veto register. The one sentence for the desk: it is a light fragrance we run in the entrance and waiting area as part of housekeeping, it is not in the consultation rooms, and we can switch it off now if you would prefer.
Vaayu · clause four₹11,999Shop → 
Refills · clause eight₹1,799Shop → 
Aangan · large centres₹25,999Shop →
This page is the standard operating procedure itself rather than an article about writing one. It is one page, it has eleven clauses, and it is written so that a quality lead can lift it wholesale, change the names and the times to suit the facility, put it through whatever approval route a quality manual requires, and have it on the wall of the housekeeping store by the end of the week. The clauses that matter most are the ones people leave out: the two zone lists by name, the prohibition on turning the level up at midday, the patient-objection procedure written as a sentence somebody can actually say at a desk, the veto register that lets a clinician or a pharmacist remove a zone without needing anybody's agreement, and a review date with a name against it. Everything in it is housekeeping and presentation. Nothing in it claims a clinical effect, because fragrance does not have one, and an SOP that implies otherwise is a liability sitting in your document set waiting for somebody to quote it back at you.
Quick answers — read this first
The eleven clauses, in order: 1. Purpose and scope, stating that scenting is housekeeping and presentation and makes no clinical claim · 2. Zones in, by name · 3. Zones out, by name, fragrance-free with doors closed · 4. Product, oil and setting, with one scent for the whole facility · 5. Schedule: on at thirty minutes before the first appointment, off at close, by timer · 6. The midday prohibition: nobody increases the level because the hall is busy · 7. Refill dates, written in the register at commissioning · 8. The daily opening check, signed · 9. The patient-objection procedure, with the sentence to say · 10. The veto register · 11. Records, owner, deputy and review date.The schedule, written as times: night before, bins and dressing waste out and mops dried flat · T-60m housekeeping opens up and waters every drain trap and unused gulley · T-45m air conditioning on · T-30m diffuser on, lowest working setting, entrance and reception zone only · T-0 first appointment, and the level has already arrived · close, the timer stops it, and nobody switches it off by hand.
The four registers: the daily check sheet, the refill log with four dates a year, the objection log, and the veto register. The one sentence for the desk: it is a light fragrance we run in the entrance and waiting area as part of housekeeping, it is not in the consultation rooms, and we can switch it off now if you would prefer.
The short answer
Short answer: a clinic's scenting SOP needs eleven clauses on one page - purpose and scope stating that fragrance is housekeeping and presentation with no clinical claim; the zones that are scented, by name; the zones that stay fragrance-free, by name; the product, oil and setting; the schedule, on thirty minutes before the first appointment and off at close by timer; an explicit prohibition on increasing the level at midday; the four refill dates; the daily opening check; the patient-objection procedure including the sentence staff say; a veto register; and records, named owner, named deputy and an annual review date.
Zones in: main entrance and lobby, reception and registration, shared and departmental waiting areas, inter-departmental corridors, lift and stair lobbies, administrative and back-office rooms, the cafe or refreshment corner, and staff rooms if staff want them. Zones out, fragrance-free with doors closed: consultation and examination rooms, treatment and procedure rooms, day-care surgery and recovery, dressing rooms, blood- and sample-collection rooms, diagnostic laboratories, pharmacy dispensing, sterile stores and CSSD, imaging and radiology, oncology and chemotherapy day-care, paediatric clinical areas, and any room where a patient undresses.
The equipment clause, costed: Vaayu Rs 11,999 - waterless cold-air nebulisation, no standing water tank, up to 1000 m3 or roughly 2,000-3,000 sq ft, 400ml of undiluted oil lasting about 75 days so four refill dates a year, Bluetooth app plus 1h/4h/8h/24h timers, under 38 dB, auto-stop, key-lock engaged at all times in a public area. Aangan Rs 25,999 where the public volume exceeds 1000 m3. Water-tank ultrasonics are not to be specified for public clinical property. Alcohol-free reeds from Rs 749 for an administrative cabin. Free shipping above Rs 499.
In this guide
The document itself, eleven clauses
One page · ₹0
The equipment clause
Vaayu · ₹11,999
Where the volume sum exceeds 1000 m³
Aangan · ₹25,999
Straight answer
What should be in a clinic's standard operating procedure for scenting?
1. Purpose and scope, and it has to say what this is not. This procedure governs the use of fragrance in the public areas of the facility. Fragrance is a housekeeping and presentation measure. It makes no clinical, therapeutic or air-treatment claim of any kind: a diffuser does not purify, disinfect or clean air, and does not treat, calm or affect any patient or condition. Fragrance is never used to cover an odour that has a source; a persistent odour is reported as a housekeeping fault and traced to its cause. Fragrance-free is the default in clinical space. Those four sentences are the whole of clause one and they are the reason the rest of the document is safe to have.
2. Zones in, by name, because a category is not a zone. Scenting is permitted in: the main entrance and lobby; reception and registration; shared and departmental waiting areas; inter-departmental corridors; lift and stair lobbies; administrative and back-office rooms; the cafe or refreshment corner; staff rooms, where the staff of that room have asked for it. Write your own room numbers against each line, because “waiting areas” means something different to the person who installs the machine and the person who audits the document.
3. Zones out, by name, and this list is longer. The following areas are fragrance-free, with doors kept closed: consultation and examination rooms; treatment and procedure rooms; day-care surgery and recovery; dressing rooms; blood- and sample-collection rooms; diagnostic laboratories; pharmacy dispensing; sterile stores and CSSD; imaging and radiology rooms; oncology and chemotherapy day-care; paediatric clinical areas; any room in which a patient undresses. The reason for each entry is worth attaching as an appendix the first time this goes to a quality committee, because somebody will ask why the pharmacy is on the list.
4. Product, oil and setting, written as a specification rather than as a preference. Equipment: one Vaayu waterless cold-air diffuser per public volume, freestanding or wall-mounted at 1.8 to 2.2 metres, discharging horizontally into the occupied band, not less than four metres from any clinical-room door, with the key-lock engaged at all times. Oil: one fragrance across the entire facility, the lightest in the range, undiluted, 400ml. Setting: the lowest setting at which the fragrance is perceptible within two metres of the entrance and not perceptible at the nearest clinical-room door. The setting is recorded in this procedure and changed only by the named owner. One scent, one setting, written down, and the single-fragrance argument across branches if you run more than one site.
5. The schedule, as clock times rather than as intentions. Night before: dressing waste and bins out, mops laundered and dried flat. T-60 minutes: housekeeping opens up; water down every drain trap and unused gulley in every department. T-45 minutes: air conditioning on. T-30 minutes: diffuser on, lowest working setting, public zones only, by timer. T-0: first appointment; the level has already arrived. Close of business: the timer stops the machine. The machine is not switched on or off by hand. The thirty-minute lead is the clause that makes the difference between a level that has arrived and a room still climbing while patients sit in it.
6. The midday prohibition, in its own clause with its own number. The intensity setting shall not be increased because the waiting area is busy, because a patient has commented, or because a member of staff can no longer perceive the fragrance. A busy hall is an air-change condition and increasing fragrance output makes it worse. Any request to increase the setting is logged and referred to the named owner. This clause exists because every unmanaged scenting installation I have seen drifts upward over months, one small adjustment at a time, until a patient tells your receptionist the fragrance is too strong. The nine-in-the-morning and six-in-the-evening question is the page to read before anybody touches the dial.
7. Refills, checks, objections, the veto register and the review date. Refill: 400ml lasts approximately seventy-five days; four refill dates are entered in the refill log at commissioning and performed by the named owner or deputy. Daily check: at opening, housekeeping confirms the machine is running, the key-lock is engaged, the outlet is unobstructed, the fill level is above a quarter and there is no leak, and signs the check sheet. Patient objection: any patient or attendant who objects is answered with - it is a light fragrance we run in the entrance and waiting area as part of housekeeping, it is not in the consultation rooms, and we can switch it off now if you would prefer - the machine is switched off within the hour if asked, no clinical benefit is offered in explanation, and the objection is logged. Veto: any clinician, nurse, pharmacist, laboratory lead, infection-control lead or housekeeping lead may remove any zone from scope by entering it in the veto register; a veto takes effect the same day and requires no agreement. Review: this procedure is reviewed annually by the named owner with the quality lead.
A portion of every order supports girl-child education through Nanhi Kali.
2. Zones in, by name, because a category is not a zone. Scenting is permitted in: the main entrance and lobby; reception and registration; shared and departmental waiting areas; inter-departmental corridors; lift and stair lobbies; administrative and back-office rooms; the cafe or refreshment corner; staff rooms, where the staff of that room have asked for it. Write your own room numbers against each line, because “waiting areas” means something different to the person who installs the machine and the person who audits the document.
3. Zones out, by name, and this list is longer. The following areas are fragrance-free, with doors kept closed: consultation and examination rooms; treatment and procedure rooms; day-care surgery and recovery; dressing rooms; blood- and sample-collection rooms; diagnostic laboratories; pharmacy dispensing; sterile stores and CSSD; imaging and radiology rooms; oncology and chemotherapy day-care; paediatric clinical areas; any room in which a patient undresses. The reason for each entry is worth attaching as an appendix the first time this goes to a quality committee, because somebody will ask why the pharmacy is on the list.
4. Product, oil and setting, written as a specification rather than as a preference. Equipment: one Vaayu waterless cold-air diffuser per public volume, freestanding or wall-mounted at 1.8 to 2.2 metres, discharging horizontally into the occupied band, not less than four metres from any clinical-room door, with the key-lock engaged at all times. Oil: one fragrance across the entire facility, the lightest in the range, undiluted, 400ml. Setting: the lowest setting at which the fragrance is perceptible within two metres of the entrance and not perceptible at the nearest clinical-room door. The setting is recorded in this procedure and changed only by the named owner. One scent, one setting, written down, and the single-fragrance argument across branches if you run more than one site.
5. The schedule, as clock times rather than as intentions. Night before: dressing waste and bins out, mops laundered and dried flat. T-60 minutes: housekeeping opens up; water down every drain trap and unused gulley in every department. T-45 minutes: air conditioning on. T-30 minutes: diffuser on, lowest working setting, public zones only, by timer. T-0: first appointment; the level has already arrived. Close of business: the timer stops the machine. The machine is not switched on or off by hand. The thirty-minute lead is the clause that makes the difference between a level that has arrived and a room still climbing while patients sit in it.
6. The midday prohibition, in its own clause with its own number. The intensity setting shall not be increased because the waiting area is busy, because a patient has commented, or because a member of staff can no longer perceive the fragrance. A busy hall is an air-change condition and increasing fragrance output makes it worse. Any request to increase the setting is logged and referred to the named owner. This clause exists because every unmanaged scenting installation I have seen drifts upward over months, one small adjustment at a time, until a patient tells your receptionist the fragrance is too strong. The nine-in-the-morning and six-in-the-evening question is the page to read before anybody touches the dial.
7. Refills, checks, objections, the veto register and the review date. Refill: 400ml lasts approximately seventy-five days; four refill dates are entered in the refill log at commissioning and performed by the named owner or deputy. Daily check: at opening, housekeeping confirms the machine is running, the key-lock is engaged, the outlet is unobstructed, the fill level is above a quarter and there is no leak, and signs the check sheet. Patient objection: any patient or attendant who objects is answered with - it is a light fragrance we run in the entrance and waiting area as part of housekeeping, it is not in the consultation rooms, and we can switch it off now if you would prefer - the machine is switched off within the hour if asked, no clinical benefit is offered in explanation, and the objection is logged. Veto: any clinician, nurse, pharmacist, laboratory lead, infection-control lead or housekeeping lead may remove any zone from scope by entering it in the veto register; a veto takes effect the same day and requires no agreement. Review: this procedure is reviewed annually by the named owner with the quality lead.
A portion of every order supports girl-child education through Nanhi Kali.
TL;DR: eleven clauses on one page. Scope stating no clinical claim · zones in by name · zones out by name · product, oil and setting · on at T-30 minutes and off at close by timer · an explicit prohibition on increasing the level at midday · four refill dates · a signed daily check · the patient-objection sentence · a veto register any clinician can write in · and records, a named owner, a named deputy and an annual review date.
The equipment clause, and what the SOP has to say about it
SOSA commercial scenting from ₹899
An SOP is only as good as the equipment clause it has to describe. A waterless machine turns clause seven into four dated refill events a year. A water tank turns the same clause into a daily empty, rinse and dry, performed by a named person in a building open twelve hours a day, and an SOP that quietly contains six hundred operations a year is an SOP that will be abandoned by March. The Vaayu is ₹11,999 with no standing water tank, the Aangan is ₹25,999 where the volume sum exceeds 1000 m³, and an alcohol-free reed diffuser from ₹749 is honest in an administrative cabin. Who owns the task, and what happens in the week they are on leave is the clause most SOPs are missing.
The one-page SOP, written out to be lifted
What follows is the document, in three sections, and it is meant to be copied rather than admired. Change the zone names to your own room numbers, change the times to your own opening hours, put your own names in the owner and deputy lines, and put it through whatever approval route your quality manual specifies. Everything in italics is text to lift. Two notes before you do. The first is that the two zone lists are the heart of the document and they have to be written as names, not as categories: the word “waiting” covers a shared hall, a departmental bay, a radiology waiting area and a day-care recovery bay, and three of those four are in scope while the fourth is not. The second is that the prohibitions carry more weight than the permissions. An SOP that says where fragrance may go is a siting document. An SOP that says it will not be increased at midday, will not be used to cover an odour with a source, will be switched off on request within the hour, and can be removed from any zone by any clinician without an argument is a governance document, and that is the one a quality committee will approve without amendment.
1
SECTION ONE
Purpose, scope and the two zone lists — the text to lift
1. Purpose. This procedure governs the use of fragrance in the public areas of the facility. Fragrance is a housekeeping and presentation measure. It makes no clinical, therapeutic or air-treatment claim of any kind. A diffuser does not purify, disinfect or clean air, and does not treat, calm or affect any patient or condition. Fragrance shall not be used to cover an odour that has a source; a persistent odour is a housekeeping fault, is reported as one, and is traced to its cause. Fragrance-free is the default condition in clinical space.
2. Zones in scope. Scenting is permitted only in the following areas, which shall be listed by room number in Appendix A: main entrance and lobby; reception and registration; shared and departmental waiting areas; inter-departmental corridors; lift and stair lobbies; administrative and back-office rooms; the cafe or refreshment corner; staff rooms, where the staff of that room have requested it.
3. Zones excluded. The following areas are fragrance-free at all times, with doors kept closed: consultation and examination rooms; treatment and procedure rooms; day-care surgery and recovery; dressing rooms; blood- and sample-collection rooms; diagnostic laboratories; pharmacy dispensing; sterile stores and CSSD; imaging and radiology rooms; oncology and chemotherapy day-care; paediatric clinical areas; any room in which a patient undresses. No equipment shall be sited within four metres of a door to any excluded area, and no supply duct serving any excluded area shall be dosed.
That last sentence matters more than it looks, because a door can be closed and a supply grille cannot. If your public zones and your consulting rooms share an air-handling unit, clause three is not enforceable and the scheme has to be standalone instead. Which departments are scented and which are not is the page to attach when somebody asks why the list is the length it is.
2. Zones in scope. Scenting is permitted only in the following areas, which shall be listed by room number in Appendix A: main entrance and lobby; reception and registration; shared and departmental waiting areas; inter-departmental corridors; lift and stair lobbies; administrative and back-office rooms; the cafe or refreshment corner; staff rooms, where the staff of that room have requested it.
3. Zones excluded. The following areas are fragrance-free at all times, with doors kept closed: consultation and examination rooms; treatment and procedure rooms; day-care surgery and recovery; dressing rooms; blood- and sample-collection rooms; diagnostic laboratories; pharmacy dispensing; sterile stores and CSSD; imaging and radiology rooms; oncology and chemotherapy day-care; paediatric clinical areas; any room in which a patient undresses. No equipment shall be sited within four metres of a door to any excluded area, and no supply duct serving any excluded area shall be dosed.
That last sentence matters more than it looks, because a door can be closed and a supply grille cannot. If your public zones and your consulting rooms share an air-handling unit, clause three is not enforceable and the scheme has to be standalone instead. Which departments are scented and which are not is the page to attach when somebody asks why the list is the length it is.
2
SECTION TWO
Equipment, setting, schedule, the midday prohibition and the refill dates
4. Equipment and oil. One waterless cold-air diffuser per public volume, sited freestanding or wall-mounted at 1.8 to 2.2 metres, discharging horizontally into the occupied band, with the key-lock engaged at all times. Equipment holding standing water shall not be specified for any public area. One fragrance, undiluted, is used across the whole facility. The fragrance, the equipment model and the intensity setting are recorded at Appendix B and are changed only by the named owner.
5. Setting. The intensity shall be the lowest setting at which the fragrance is perceptible within two metres of the main entrance and is not perceptible at the nearest excluded-area door. This is verified at commissioning by the named owner walking the boundary, and re-verified at each annual review.
6. Schedule. Night before: dressing waste and general bins removed; mops laundered and dried flat. T-60 minutes: housekeeping opens up and waters every drain trap and unused gulley in every department. T-45 minutes: air conditioning on. T-30 minutes: diffuser starts, by timer, at the recorded setting. T-0: first appointment. Close of business: the timer stops the machine. The machine shall not be switched on or off by hand.
7. Prohibition on increase. The intensity setting shall not be increased because the waiting area is busy, because a member of staff can no longer perceive the fragrance, or because a complaint has been received about any other odour. A busy area is an air-change condition; increasing fragrance output worsens it. Any request to increase the setting shall be logged and referred to the named owner, who may only act on it after the source of the complaint has been investigated.
8. Refill. A 400ml fill lasts approximately seventy-five days at the facility's opening hours. Four refill dates per machine per year shall be entered in the refill log at commissioning. Refills are performed by the named owner or the named deputy and signed for. 9. Daily check. At opening, housekeeping shall confirm that the machine is running, the key-lock is engaged, the outlet is unobstructed, the fill level is above one quarter and there is no leak or residue, and shall sign the daily check sheet.
5. Setting. The intensity shall be the lowest setting at which the fragrance is perceptible within two metres of the main entrance and is not perceptible at the nearest excluded-area door. This is verified at commissioning by the named owner walking the boundary, and re-verified at each annual review.
6. Schedule. Night before: dressing waste and general bins removed; mops laundered and dried flat. T-60 minutes: housekeeping opens up and waters every drain trap and unused gulley in every department. T-45 minutes: air conditioning on. T-30 minutes: diffuser starts, by timer, at the recorded setting. T-0: first appointment. Close of business: the timer stops the machine. The machine shall not be switched on or off by hand.
7. Prohibition on increase. The intensity setting shall not be increased because the waiting area is busy, because a member of staff can no longer perceive the fragrance, or because a complaint has been received about any other odour. A busy area is an air-change condition; increasing fragrance output worsens it. Any request to increase the setting shall be logged and referred to the named owner, who may only act on it after the source of the complaint has been investigated.
8. Refill. A 400ml fill lasts approximately seventy-five days at the facility's opening hours. Four refill dates per machine per year shall be entered in the refill log at commissioning. Refills are performed by the named owner or the named deputy and signed for. 9. Daily check. At opening, housekeeping shall confirm that the machine is running, the key-lock is engaged, the outlet is unobstructed, the fill level is above one quarter and there is no leak or residue, and shall sign the daily check sheet.
3
SECTION THREE
Objections, the veto register, records and the review date
10. Patient and staff objection. Any patient, attendant or member of staff who objects to the fragrance is answered as follows: “It is a light fragrance we run in the entrance and waiting area as part of housekeeping. It is not in the consultation rooms. We can switch it off now if you would prefer.” No clinical or therapeutic benefit shall be offered in explanation. If switching off is requested, the machine shall be switched off within one hour and shall remain off for the remainder of that session. Every objection shall be entered in the objection log with the date, the zone and the action taken. Three objections relating to the same zone within one quarter require the setting to be reduced or the zone removed from scope.
11. Veto register. Any clinician, nursing in-charge, pharmacist, laboratory lead, infection-control lead or housekeeping lead may remove any zone from the scope of this procedure by entering the zone, the date and their name in the veto register. A veto takes effect on the day it is entered, requires no agreement from the named owner and no justification, and may be reversed only by the person who entered it or by the quality lead. The named owner shall confirm within one working day that the zone has been removed.
The veto register is the clause that makes the rest of the document credible inside a clinical building, and it is the clause most often missing. It costs nothing, it takes a page in a file, and it converts the fragrance-free rule from a promise made by facilities into a control held by the people who work in the rooms. 12. Records. Four registers are maintained: the daily check sheet, the refill log, the objection log and the veto register. Retention is as specified in the quality manual. 13. Ownership and review. The named owner of this procedure is ______ (Facilities). The named deputy is ______. This procedure is reviewed annually, on ______, by the named owner together with the quality lead, and at any time following a veto, a zone change, a change of equipment or three objections in one quarter. What to say to a patient who asks about the fragrance goes into clause ten at greater length.
11. Veto register. Any clinician, nursing in-charge, pharmacist, laboratory lead, infection-control lead or housekeeping lead may remove any zone from the scope of this procedure by entering the zone, the date and their name in the veto register. A veto takes effect on the day it is entered, requires no agreement from the named owner and no justification, and may be reversed only by the person who entered it or by the quality lead. The named owner shall confirm within one working day that the zone has been removed.
The veto register is the clause that makes the rest of the document credible inside a clinical building, and it is the clause most often missing. It costs nothing, it takes a page in a file, and it converts the fragrance-free rule from a promise made by facilities into a control held by the people who work in the rooms. 12. Records. Four registers are maintained: the daily check sheet, the refill log, the objection log and the veto register. Retention is as specified in the quality manual. 13. Ownership and review. The named owner of this procedure is ______ (Facilities). The named deputy is ______. This procedure is reviewed annually, on ______, by the named owner together with the quality lead, and at any time following a veto, a zone change, a change of equipment or three objections in one quarter. What to say to a patient who asks about the fragrance goes into clause ten at greater length.
The instruction I would give a quality lead: approve the prohibitions first and the permissions second. If clauses seven, ten and eleven survive your committee unamended, the rest of the document can be adjusted at leisure and nothing in your building will go wrong in the meantime.
The SOP as a table, clause by clause
The same document in the form a facilities file wants it: one row per clause, with the owner and the record named. Print it, fill in the blanks, and keep the long version as the approved text.
Print this
Eleven clauses, one page, four registers and a review date
| Clause | What it says | Who owns it | The record |
|---|---|---|---|
| 1–3. Purpose and the two zone lists ★ | Housekeeping and presentation, no clinical claim, never used to cover a source. Zones in by room number; zones out fragrance-free with doors closed | Facilities drafts; the quality lead and medical director approve the excluded list | The approved SOP, plus Appendix A of room numbers |
| 4–5. Equipment, oil and setting | One waterless machine per public volume at 1.8–2.2 m, key-lock engaged, four metres clear of any excluded-area door. One fragrance, undiluted. Lowest working setting | The named owner, and nobody else changes the setting | Appendix B: model, fragrance, setting, siting |
| 6. The schedule | Traps at T-60m, air conditioning at T-45m, diffuser on by timer at T-30m, timer stops it at close. Never switched by hand | Housekeeping opens up; facilities holds the timer | The daily check sheet |
| 7. The midday prohibition | The setting is not increased because the hall is busy, because staff stopped noticing it, or because of a complaint about another odour | The named owner is the only person who may act on a request to increase | A logged request, and an investigation before any change |
| 8–9. Refills and the daily check | 400ml ≈ 75 days, so four dated refills a year, signed. At opening: running, key-locked, outlet clear, level above a quarter, no leak | Named owner refills; named deputy covers leave. Both names, in the document | The refill log, and the signed daily check sheet |
| 10. Patient objection | The sentence to say, no benefit offered in explanation, off within the hour on request, logged. Three in a quarter in one zone forces a reduction or removal | Front office says it; facilities acts on it; the owner reviews the log | The objection log. The wording, at length |
| 11–13. Veto register, records, review | Any clinician, pharmacist, lab or infection-control lead removes a zone in writing, same day, no agreement needed. Four registers. Annual review with a date | The veto belongs to whoever entered it; the review belongs to the owner and the quality lead | The veto register, and a dated review signature |
| Never in the SOP | Any clinical or therapeutic benefit, any air-purification wording, any satisfaction target, a spray at the counter, a candle, or scenting of an excluded area | Nobody. A document that implies an effect fragrance does not have is a liability in your own file | — |
Shop this guide
The equipment clause, and the refill the log is counting
Vaayu · clause four₹11,999Shop → Refills · clause eight₹1,799Shop → Aangan · large centres₹25,999Shop →
The SOSA principle
The permissions in a scenting SOP are a siting document. The prohibitions are the governance document, and they are the reason a quality committee can approve it. No increase at midday, off within the hour on request, and any clinician can veto a zone the same day without anybody's agreement.
Eleven clauses, four registers, two names and a review date. It fits on one page and it costs nothing to write.
The three clauses that get left out, and what happens then
The first omission is the midday prohibition, and it is the commonest. An SOP that specifies a setting but does not forbid raising it will drift upward, because the people in the building stop perceiving a constant fragrance within a few days while visitors arriving from outside perceive it fully. That asymmetry is the whole mechanism: the staff member who adjusts the dial at two in the afternoon is responding honestly to a sensation that patients walking in from the street are not having. Six months of small honest adjustments later, your receptionist is being told the fragrance is too strong, somebody turns it down by half, and the installation has lost the one property that made it worth having, which is that the level is the same every day. Write the prohibition as its own numbered clause so it can be cited. Put the key-lock requirement in the same clause, because a lock is the mechanism and the clause is the rule, and neither works without the other. And add the sentence about complaints relating to other odours, because the single worst use of a scenting machine is as a response to a smell with a source - a polyclinic that smells of disinfectant every morning needs its mopping schedule changed, not its diffuser turned up.
The second omission is the veto register, and it is the one that decides whether clinical staff trust the document at all. A facilities SOP that says clinical areas are fragrance-free is a promise made by the department that owns the machine. A veto register is a control held by the people who work in the rooms, and the difference is not cosmetic: it means a laboratory lead who is uneasy about a corridor adjacent to her bench does not have to win an argument with facilities, she has to write one line in a register. I have had exactly one objection to this clause from a facilities manager, which was that it allows a single person to shrink the scheme. That is correct and it is the point. A zone that one clinician is unhappy about is not a zone worth defending for the sake of a fragrance, and in practice the register stays almost empty - what it changes is the conversation at the approval meeting, where a medical director who can see the register is being asked to approve something reversible rather than something permanent. How a centre decides where to scent when staff or patients are sensitive to fragrance is the page that sits behind this clause.
The third omission is the review date and the two names, and this one is purely administrative until the day it is not. Write a named owner and a named deputy into clause thirteen, not a department. A task owned by Facilities is owned by nobody, and the specific failure is not that the refill is missed - the machine simply stops and somebody notices - but that the daily check lapses, which is how a slow leak, a blocked outlet or a key-lock left open goes unseen for a month. The deputy exists for the week the owner is on leave, and the honest reason to specify a waterless machine in the equipment clause is that its handling burden survives that week: four dated refill events a year, each of which can be moved by a few days without consequence. A water tank cannot be moved by a few days. It is a daily empty, rinse and dry, which in a building open twelve hours a day across roughly three hundred and ten opening days is something in the region of six hundred operations a year, and a tank in a clinic is a clause that gets quietly abandoned the first time its owner takes a fortnight off. On cost, so the document can carry it: the Vaayu at ₹11,999, four 300ml refills a year at ₹1,799 which is about ₹7,200, and roughly ₹150 of electricity at 5 W over a twelve-hour day, so about ₹19,000 in year one and ₹7,350 thereafter. That figure belongs in the facilities budget, and the SOP is the document that keeps it there.
The permissions in this document decide where the machine stands. The prohibitions decide whether anybody still trusts it in eighteen months, which is the only test a procedure has to pass.
— Sonal Sahani, SOSA
The SOSA edit
The four registers the SOP creates, what goes in each, who signs it and how often — because a procedure with no records is a wall poster.
The SOSA edit
Four registers, two names and one review date
| The register | What goes in it | Who signs it | How often |
|---|---|---|---|
| 1. The daily check sheet ★ | Running · key-lock engaged · outlet unobstructed · fill level above one quarter · no leak or residue. One tick per line, one signature | Housekeeping, at opening, as part of the T-60m round | Daily |
| 2. The refill log | Four dates per machine per year entered at commissioning; the actual date performed; the fragrance; the quantity; the signature of the owner or deputy | The named owner, or the named deputy during leave | Four times a year per machine |
| 3. The objection log | Date, zone, what was said, whether the machine was switched off, and the action taken. Three in one quarter in one zone forces a reduction or removal | Front office enters it; the named owner reviews and signs the quarter | As they occur, reviewed quarterly |
| 4. The veto register | Zone, date, name and role of the person vetoing. Effective the same day, no justification required, reversible only by them or the quality lead | Whoever entered it. The owner countersigns that the zone has been removed | As they occur, confirmed within one working day |
| The two names and the review | Named owner (Facilities) and named deputy in clause thirteen, plus a dated annual review with the quality lead and a re-verification of the setting | The named owner and the quality lead jointly | Annually, and after any veto or equipment change |
| Not in the procedure at any price | A clinical or therapeutic benefit, air-purification wording, a satisfaction target, a spray at the counter, a candle, a water tank in a public area, or scenting of an excluded room | Nobody. The same six answers that disqualify a vendor disqualify a clause | — |
Honest notes for buyers: on this page specifically, every clause offered here is a template to be adapted and approved through your own quality system, and the clauses that matter most are the prohibitions: no increase in setting at midday, no use of fragrance to cover an odour that has a source, no scenting of any excluded clinical area, and a veto any clinician may exercise the same day without agreement. In general, fragrance in a medical facility is housekeeping and presentation, never treatment. Nothing here claims that a fragrance reduces anxiety, aids recovery, improves sleep, cleans or disinfects air, or has any clinical effect whatsoever, because it does not and a diffuser is not an air purifier. Scenting belongs to the entrance, reception, shared waiting areas, inter-departmental corridors and administrative rooms. Consultation and examination rooms, treatment and procedure rooms, day-care surgery, dressing rooms, blood- and sample-collection rooms, laboratories, pharmacy dispensing, sterile stores, imaging rooms, oncology day-care and paediatric clinical areas should be left fragrance-free. A persistent smell is information about a dry drain trap, a bin, a soiled-linen route or an air-conditioning drain pan: find it and fix it rather than covering it. On the machines: the Vaayu at ₹11,999 is waterless cold-air nebulisation with no standing water tank, covering up to 1000m³ or roughly 2,000–3,000 sq ft, with a 400ml tank lasting about 75 days, app control, 1h/4h/8h/24h timers, under-38dB running, auto-stop and a key-lock for public areas. The Aangan at ₹25,999 covers up to 3,000m³ and connects to HVAC for a whole floor or an atrium. The ultrasonic Sukoon, Boond and Megh are water-based, hold standing water and add 30–50 ml of water an hour to the air, which suits a single administrative cabin with a named person emptying and drying the tank daily and is unsuitable for public clinical property. An alcohol-free reed diffuser needs 24–72 hours to establish and suits a small lobby rather than a large waiting hall. Candles are not appropriate in a healthcare facility because an open flame is a fire-safety matter. SOSA does not make a room spray. The Hotel Collection scents are SOSA's own interpretations inspired by the world's finest hotels; SOSA is an independent Indian fragrance house, not affiliated with or endorsed by any hotel brand. A portion of every order supports girl-child education through Nanhi Kali.
What clause four is describing
SOSA Vaayu ₹11,999
Waterless cold-air nebulisation with no standing water tank, up to 1000 m³ or roughly 2,000 to 3,000 sq ft, 400ml of undiluted oil lasting about seventy-five days so four dated refill events a year, Bluetooth app plus 1h/4h/8h/24h timers so clause six runs itself, under 38 dB, auto-stop, and a key-lock without which clause seven has no mechanism behind it. An SOP written around a waterless machine contains four dated tasks a year. The same SOP written around a water tank contains a daily operation, and that is the clause that gets abandoned.
SS
ISIPCA
Versailles
Versailles
A note from Sonal
The first version of this document was two pages and had no prohibitions in it at all. A quality lead at a polyclinic in Pune sent it back to me with three comments in the margin, and all three were the same comment in different words: this tells me what you want to do, it does not tell me what you will not do. She wanted the midday clause, she wanted a line that said the machine goes off within the hour if a patient asks, and she wanted to know who in her building could stop it without having to argue with the facilities manager. I rewrote it around those three things, and the document got shorter rather than longer. It now fits on one page and it gets approved, which the two-page version did not.
What I took from that is that a scenting procedure is read by people looking for the hazard, not by people looking for the benefit. A medical director reading clause one is checking whether the sentence “makes no clinical claim” is in it, because without that sentence the document itself becomes the claim, sitting in the facility's own approved document set with a signature on it. A nursing in-charge is reading clause eleven to find out whether she can remove a corridor. A housekeeping supervisor is reading clause eight to work out how many times a year this will land on her. None of them is reading it to find out what the fragrance smells like. I have sent some version of this page to every clinic that has asked me for one, including the ones who then decided to put the machine off for a year, and the page that puts fragrance fourth behind housekeeping, ventilation and seating is the one I send alongside it.
Everything is made and supported from Pune, and a part of every order funds girl-child education through Nanhi Kali. You get a space that smells like somewhere looked after; a girl gets a classroom. That equation has always felt right to me.
Frequently asked questions
What should be in a clinic's standard operating procedure for scenting?
Eleven clauses on one page: purpose and scope stating that fragrance is housekeeping and presentation with no clinical claim; zones in scope by room number; zones excluded and kept fragrance-free with doors closed; equipment, oil and siting; the lowest working setting, recorded; the schedule, with the diffuser starting thirty minutes before the first appointment and stopping at close by timer; a prohibition on increasing the setting; the four refill dates; the signed daily check; the patient-objection procedure; and the veto register, records, named owner, named deputy and annual review date.
Why does the SOP need an explicit clause forbidding an increase at midday?
Because staff stop perceiving a constant fragrance within a few days while arriving patients perceive it fully, so an honest adjustment at two in the afternoon is almost always an increase nobody outside the building needed. Without a numbered clause to cite, the setting drifts upward over months until somebody complains and it is cut by half. A busy waiting area is an air-change condition and more fragrance makes it worse. Pair the clause with a key-lock, because the clause is the rule and the lock is the mechanism.
What is a veto register, and who should be allowed to use it?
It is a one-page register in which any clinician, nursing in-charge, pharmacist, laboratory lead, infection-control lead or housekeeping lead may remove a zone from the scope of the procedure by writing the zone, the date and their name. It takes effect the same day, needs no justification and no agreement from facilities, and is reversible only by the person who entered it or by the quality lead. It converts the fragrance-free rule from a promise made by facilities into a control held by the people who work in the rooms, and in practice it stays nearly empty.
What should staff say to a patient who objects to the fragrance?
One sentence, and no more: it is a light fragrance we run in the entrance and waiting area as part of housekeeping, it is not in the consultation rooms, and we can switch it off now if you would prefer. No clinical or therapeutic benefit is offered in explanation, because there is none. If the patient asks for it off, it goes off within the hour and stays off for that session, and the objection is logged. Three objections in one quarter about the same zone should force a lower setting or remove the zone.
How many records does a scenting SOP actually create?
Four. A signed daily check sheet completed by housekeeping at opening; a refill log with four dated refill events per machine per year, signed by the named owner or deputy; an objection log with the date, zone and action taken; and the veto register. On a waterless machine that is four scheduled tasks a year plus a daily tick. A machine holding standing water adds a daily empty, rinse and dry, which in a facility open twelve hours a day is in the region of six hundred operations a year, and that is the clause that gets abandoned.
One page, eleven clauses
Approve the prohibitions first — and the rest of the procedure can be adjusted at leisure
The Vaayu is ₹11,999: waterless cold-air nebulisation with no standing water tank, up to 1000 m³ or roughly 2,000–3,000 sq ft, a 400ml tank lasting about seventy-five days for four dated refills a year, Bluetooth app control with 1h/4h/8h/24h timers so the schedule runs itself, under 38 dB, auto-stop and a key-lock for public areas, supplied with four hotel-inspired fragrances. The Aangan is ₹25,999 for up to 3,000 m³, HVAC-connected or standalone, 800ml, metal body, programmable, under 42 dB. Free shipping above ₹499, and a portion of every order supports girl-child education through Nanhi Kali.
See the Vaayu · ₹11,999 All commercial scenting
Continue the read
More from SOSA
- Who Should Be Responsible for Refilling and Maintaining a Clinic's Scent Diffuser? — clause thirteen, and the week the named owner is on leave.
- Which Areas of a Medical Centre Should Always Be Left Fragrance-Free? — the appendix to attach when somebody asks why the excluded list is so long.
- What Should a Clinic Say to a Patient Who Asks About the Fragrance in Reception? — clause ten, in the words a receptionist can use.
- How Should a Medical Centre's Procurement Team Evaluate a Scenting System? — the twelve questions a vendor's reply has to fit inside this document.
- Brand: the SOSA founder story.
Editorial standards & sources
Product facts used in this guide. SOSA Vaayu Rs 11,999: waterless cold-air nebulising diffuser, no water reservoir, coverage up to 1000m3 (approximately 2,000-3,000 sq ft), 400ml refillable tank lasting up to about 75 days per fill, Bluetooth app plus onboard control, 1h/4h/8h/24h timer scheduling, adjustable intensity, under 38 dB, DC 12V/1A at 5W, 165 x 80.5 x 215 mm and 0.9 kg, freestanding or wall or HVAC mounted, auto-stop and key-lock, CE, RoHS and SGS certified, supplied with four hotel-inspired fragrances. SOSA Aangan Rs 25,999: HVAC-connected or standalone commercial nebulising diffuser, coverage up to 3,000m3 (roughly 8,000-10,000 sq ft), 800ml reservoir, metal body, programmable schedules, under 42 dB. Ultrasonic machines are water-based, hold standing water and consume 30-50 ml of water an hour: Sukoon Rs 1,899 (500ml, 270-320 sq ft, 16-18 hours on low, three 15ml Hotel Collection scents included), Boond Rs 899 (300ml), Megh Rs 3,499 (6 litres). Hotel Collection water-based fragrance 15ml Rs 299, 100ml Rs 999, 300ml Rs 1,799. Alcohol-free reed diffusers from Rs 749, requiring 24-72 hours to reach their working level. Free shipping above Rs 499. Coverage arithmetic: cubic metres equal floor area in square feet divided by 10.76 and multiplied by ceiling height in metres, counting only the volumes that are actually scented. This guide makes no medical, therapeutic or clinical claim of any kind for fragrance: a diffuser does not purify, disinfect or clean air, and does not treat, calm or affect any patient or condition. Fragrance is housekeeping and presentation. Clinical areas should be left fragrance-free, and a persistent odour should be traced to its source and corrected rather than covered. SOSA is not affiliated with or endorsed by any hotel brand. Prices subject to change - see the live product pages.