Founder Diaries · Clinics & Medical Centres · From Sprays and Reeds to the Machine
By Sonal Sahani · ISIPCA Versailles 11 min read Updated September 2026
Yes, but not for the reason a salesperson has probably already given you. The honest concern about a water tank in a clinic is not a clinical one and I am not going to make it one: it is that a tank is a daily task, at open and at close, on every day the building trades, and that task has to belong to a person whose name is written down somewhere. In a facility that runs twelve hours a day that is roughly 624 separate operations a year per machine. This page writes the routine out in full, works out who owns it, and deals with the week that person is on leave — which is the week the whole arrangement is actually tested.
Quick answers — read this first
The short answer: worry about it as a housekeeping and rostering question, not as a clinical one. Nothing here suggests a tank of water is a risk to anybody. It is a job somebody has to own.
The routine: at close — switch off, unplug, carry to a sink, pour out what is left, rinse, wipe out, leave inverted to dry. At open — refill with fresh water, three to six drops. About five minutes and two minutes, six days a week, roughly 624 operations a year per machine.
The conclusion: if you cannot name the person and their deputy, buy a machine with no tank. The
Vaayu at ₹11,999 is waterless, up to 1000 m³, with a 400ml fill lasting about seventy-five days — four or five refill visits a year instead of 624 tank operations.
The short answer
Short answer: yes, but as an operating question rather than a clinical one. A diffuser tank has to be emptied, rinsed and dried at the end of every day and refilled at the start of the next, by a named person, six days a week. That is about 624 operations a year per machine. If nobody in your building owns that, the tank will be topped up instead of emptied and the room will start smelling flat.
The pick: the waterless
Vaayu at ₹11,999 for any public area of a clinic — no reservoir, up to 1000 m³, a 400ml fill lasting about seventy-five days, app plus 1h/4h/8h/24h timers, under 38 dB, auto-stop and a key-lock. Keep the water-based
Sukoon at ₹1,899 or
Boond at ₹899 for one administrative cabin where one person locks the room and owns the tank.
Shop: the
Vaayu ₹11,999 and the
Aangan ₹25,999 for a whole floor or an atrium. Ultrasonics are water-based and add 30–50 ml of water an hour:
Sukoon ₹1,899 with three 15ml scents included,
Boond ₹899,
Megh ₹3,499, running the
Hotel Collection from ₹299 at three to six drops per tank. Free shipping above ₹499.
Straight answer
Should a multi-speciality clinic worry about standing water in a diffuser tank?
1. Yes, and the worry is a roster rather than a risk. I am not telling you a tank of water is dangerous, and nothing on this page implies it. I am telling you it is a job that recurs twice a day for as long as you own the machine, and that in most clinics the job is assumed rather than assigned.
2. The routine, in full. At close: switch the machine off, unplug it, carry the tank to a sink, pour out whatever water is left, rinse it, wipe it out with a dry cloth, and leave it upside down overnight so it dries. At open: refill with fresh water and add three to six drops. Roughly five minutes in the evening and two in the morning.
3. That is about 624 operations a year, per machine. Two operations a day, six days a week, fifty-two weeks. If it takes five machines to cover a waiting hall the way one
Vaayu does, it is around 3,100. Nobody ever writes that number down before buying, and it is the number that decides the question.
4. The failure is silent, which is why it wins. The tank does not get emptied; it gets topped up. Topping up takes thirty seconds, looks identical and requires no cloth, no sink and no drying. Three weeks of that and the fragrance in the room goes flat and dull, and the instinct is to add more drops, which is precisely the wrong response.
5. So name the person before you buy, not after. Not a department — a person, with a deputy named alongside them for the week they are on leave, a line in the standard operating procedure, and a place on the closing checklist that somebody initials. If you cannot fill in both names, you have your answer.
6. And if you cannot, buy a machine with no tank. The
Vaayu at ₹11,999 is waterless cold-air nebulisation, covering up to 1000 m³ from a 400ml fill that lasts about seventy-five days — four or five refill visits a year by one person. Keep a water-based machine for one administrative cabin, behind a door, where the person who locks the room owns the tank. Clinical rooms stay fragrance-free throughout, and any persistent smell in the building is information about a source that should be found and fixed rather than covered.
A portion of every order supports girl-child education through Nanhi Kali.
TL;DR: worry about it as a rostering question rather than a clinical one — nothing here suggests a tank is a risk. A tank has to be emptied, rinsed and dried at close and refilled at open, which is about 624 operations a year per machine in a clinic open six days a week. Name the person and their deputy before you buy. If you cannot name both, buy the waterless
Vaayu at ₹11,999, where the routine is four or five refills a year.
A 300ml tank is still a tank, and still a daily job
SOSA Boond · 300ml ultrasonic ₹899
₹899 is the cheapest way into scenting anything and it buys exactly the same daily routine as the larger machines, because the routine belongs to the water and not to the litres. Switch off, unplug, carry to a sink, pour out what is left, rinse, wipe dry, leave it inverted overnight, refill in the morning with fresh water and three to six drops. Five minutes at close, two at open, six days a week. In a single admin cabin that is a reasonable thing to ask of the person who locks the room. In a public waiting hall, multiplied by the number of machines it takes to cover the volume, it is a job nobody in the building has been given.
The routine, written out task by task
Almost nobody writes this routine down before they buy, and writing it down is the entire exercise. A water-based diffuser is not a machine you switch on; it is a machine with a small piece of daily housekeeping permanently attached, and the housekeeping is the part that decides whether it still works in March. So here it is as it would appear on a closing checklist, in the order it actually happens, with honest timings taken from standing next to people doing it rather than from a manual. Read it as a facility manager reads a job card: how long, how often, who, and what happens on the day it is missed.
1
THE ROUTINE
Seven steps at close, two at open, and a cloth that has to exist
Start with the evening, because that is the half that gets skipped.
Switch the machine off at the unit rather than at the wall, so the auto shut-off is not doing work it was not designed for. Unplug it. Lift the tank out and carry it to a sink — which means there has to be a sink that housekeeping is allowed to use for this, and in a clinic that sentence is less obvious than it sounds. Pour out whatever water is left. Rinse the tank. Wipe it out with a dry cloth, which means a cloth kept for this purpose rather than the one that has just done the counters. Leave it inverted overnight so it dries properly rather than sitting half-dry with the lid on. Then the morning: refill with fresh water to the line, add three to six drops of the water-based
Hotel Collection oil, and put it back. Five minutes at close if the sink is near, rather more if it is on another floor; two minutes at open.
There is one more step that belongs on the card and is almost never on it: rinse properly when you change scent, and descale the 2.4MHz plate periodically, because in hard-water cities a mineral film builds on it, output falls, and the response is almost always to turn the machine up rather than to clean the plate. None of this is difficult. All of it is real, it recurs about 624 times a year per machine, and it belongs on a piece of paper before it belongs on a purchase order.
A clinic's scenting standard operating procedure is a page of its own.
2
WHO OWNS IT
A name, a deputy and an initial — not a department
Then the ownership question, which is where these arrangements actually fail.
In every clinic I have worked with that stopped emptying its tanks, the task had been given to a department rather than to a person. Housekeeping owns it. Front office owns it. Which means, in practice, that nobody owns it and everybody assumes somebody else did it. The fix is unglamorous and costs nothing: a named individual, a named deputy, a line in the standard operating procedure that says which machine, which zone, at what time, and a box on the closing checklist that gets initialled by the person who locked up. That is the same discipline you already apply to the dressing-waste bins and the drug fridge log, and it works for the same reason — an initial is a fact and an assumption is not.
The second half of ownership is the reporting line, and it matters more than people expect. The person who empties the tank is usually the person who first notices that the room has gone flat, and if they have nobody to tell, they will solve it themselves by adding drops. That is how a clinic ends up with a waiting hall running at twice the intensity somebody carefully set in week one, without a single decision having been taken. Whoever owns the tank should also own the sentence: if the room smells different, tell facilities, do not adjust it.
Who should be responsible for refilling and maintaining a clinic's diffuser is worth settling in the same conversation, because the answer to both questions is usually the same person and they should be asked before the machine is ordered rather than after it arrives.
3
THE WEEK THEY ARE AWAY
Diwali, a wedding, a resignation, and the topping-up that replaces it
Now the week that actually decides this, and it is not a dramatic week.
It is the week your named person takes leave for a wedding in another city, or the four days the building runs on a skeleton roster around Diwali, or the month after somebody resigns and their replacement has been shown eleven things but not this one. What happens is not that anybody decides to stop. It is that the person covering finds the machine low at nine in the morning, tops it up from a jug, and moves on, because topping up takes thirty seconds and emptying takes five minutes and involves a sink on another floor. Nobody is at fault and nothing visible happens. Two or three weeks later the room has a flat, dull, slightly tired quality that nobody can put a name to, the fragrance is not reading the way it did in January, and somebody responds by increasing the dose, which makes the room heavier without making it fresher.
That sequence is the honest reason I recommend waterless machines for public clinical property, and it has nothing to do with medicine. It is that the routine does not survive contact with a real roster, and a machine whose performance depends on a task that quietly stops is a machine that will quietly stop being good. A waterless unit has no version of this: there is nothing to top up, nothing to carry, and the only recurring task is a refill about every seventy-five days, which is an appointment in a calendar rather than a habit in a routine.
What that looks like across a full twelve-hour day is the next page.
The test I would set before signing the purchase order: write two names on the quotation — the person who empties the tank and the person who does it when they are away. If the second box stays empty, buy a machine that does not have a tank.
The daily round, and the week it is skipped
The routine as it would appear on a job card, with an honest column for what actually happens on the days it is missed. Nothing in the last column is a health statement and none is intended as one — these are presentation and maintenance outcomes, which is the only register in which this argument is true.
The tank routine
Nine tasks, twice a day, six days a week — about 624 operations a year
| Task |
When |
How long |
What happens in the week it is skipped |
Who initials it |
| 1. Switch off at the unit and unplug ★ |
Close |
Seconds |
The machine runs on into an empty building, or the auto shut-off does the job instead |
The person who locks the zone |
| 2. Carry the tank to a sink |
Close |
1–3 min, depending where the sink is |
The step that decides the rest. If the sink is on another floor, the routine collapses here first |
Same person |
| 3. Pour out the remaining water |
Close |
Seconds |
Replaced by topping up in the morning, which takes thirty seconds and looks identical |
Same person |
| 4. Rinse the tank |
Close |
About a minute |
Skipped silently. Nothing visible changes for two or three weeks |
Same person |
| 5. Wipe out with a dry cloth kept for the purpose |
Close |
About a minute |
Skipped, or done with whichever cloth is nearest, which is its own small problem |
Same person |
| 6. Leave inverted overnight to dry |
Close |
No time, but it needs a shelf |
The lid goes back on damp and the tank never actually dries between uses |
Same person |
| 7. Refill with fresh water to the line |
Open |
About a minute |
Becomes a top-up rather than a fill, which is the failure this whole page is about |
Opening housekeeping |
| 8. Three to six drops, per tank not per litre |
Open |
Seconds |
Drops creep upward because the room has gone flat, and the level nobody set becomes the level |
Opening housekeeping |
| 9. Rinse on scent change; descale the plate |
Monthly |
Ten minutes |
Mineral film builds, output falls, and somebody turns the machine up instead of cleaning it |
Facilities |
Shop this guide
The two ways out of the routine
The SOSA principle
The tank does not get neglected. It gets topped up. Topping up takes thirty seconds, looks exactly like doing it properly, and is how a carefully set room quietly becomes a heavy one.
Which is why the two names on the purchase order matter more than any specification on it — the person who empties it, and the person who does it the week they are away.
Naming the owner, and what to buy if you cannot
Start with the case where a tank is entirely reasonable, because it exists and it is common. One administrative cabin, behind a door, with one person who locks that room at the end of the day: the Sukoon at ₹1,899 with its 500ml BPA-free tank, 270–320 sq ft of coverage, 16 to 18 hours per fill on low, remote, steady, 2H and 4H timers, auto shut-off and three 15ml Hotel Collection scents included is exactly the right purchase there, and the Boond at ₹899 is the right one for a smaller room. The routine works in that setting for a simple structural reason: the task is attached to an existing habit. The person already locks the room, the sink is usually within twenty feet, and if they forget, one office is affected rather than a waiting hall full of patients. Multiply the same arrangement by the five or six machines it takes to hold a public volume, spread across two floors and two shifts of housekeeping, and the arithmetic changes completely — around 3,100 tank operations a year, owned by people who change, in rooms nobody locks. The full head-to-head between waterless and water-based is on its own page, including the two columns where the ultrasonic honestly wins.
Then the waterless alternative, described as an operating routine rather than as a specification. The Vaayu at ₹11,999 holds up to 1000 m³ — roughly 2,000 to 3,000 sq ft — from a 400ml tank of undiluted oil that lasts about seventy-five days on a clinic's opening hours, which is four or five refill visits a year by one person. There is nothing to empty, nothing to rinse, nothing to dry and no sink involved at any point. It atomises oil to a dry, residue-free mist, so it adds no water to the air and leaves nothing on the surfaces beneath it. The key-lock means the intensity set in week one is the intensity in week forty, and the 1h, 4h, 8h and 24h timers with Bluetooth app scheduling mean it runs the opening hours and stops rather than running overnight into an empty building. At 0.9 kg and 165 × 80.5 × 215 mm it will sit on a console, and in a public hall I would spend the fitting cost on the Vaayu wall or HVAC mount, which takes the machine out of the daily round and out of everybody's reach at the same time. Set the level once, by walking in cold each morning in the first week, and then leave it — and do not turn it up at midday because the hall got busy, because busy is a ventilation problem.
Then the three things that stay true regardless of which machine you buy. First, the source. If your building smells of something now, no machine of any kind is the answer: a persistent smell in a medical facility is information about a dry drain trap in a toilet or an unused sink, a dressing bin past its collection time, a soiled-linen route through a public corridor or an air-conditioning drain pan, and the job is to find it and fix it rather than covering it. Water down every trap, check the collection times against what actually happens, and walk the linen route at eleven in the morning. Second, the zones. 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, imaging rooms, oncology and chemotherapy day-care and paediatric clinical areas are fragrance-free with the doors shut, whichever technology you own, and that list has a page of its own. Third, the limits of the rest of the range: an alcohol-free reed diffuser from ₹749 takes 24 to 72 hours to establish and is barely noticed past about a metre, so it belongs in an administrative cabin rather than a waiting hall; candles are not appropriate in a healthcare building because an open flame is a fire-safety and insurance matter; and SOSA does not make a room spray, because the sprays in the range are car perfumes.
Nobody in a clinic decides to stop emptying the tank. They decide, once, on a busy Tuesday, to top it up instead — and that decision is never revisited.
— Sonal Sahani, SOSA
The SOSA edit
In the order I would work through this with a facility manager. The first row is a piece of paper rather than a product, and it is the row that decides everything below it. The last row states the limit of the argument this page makes, because overstating it would be the easiest thing in the world and the least useful.
The SOSA edit
Standing water, in decision order
| Do this |
What it is |
When it earns its place |
Cost |
| 1. Write two names on the quotation ★ |
The person who empties, rinses and dries the tank at close, and the deputy who does it in the week they are away |
Before the purchase order. If the second box stays empty, the rest of the decision is already made |
₹0 |
| 2. Vaayu if you could not fill both boxes |
Waterless, no reservoir, up to 1000 m³, 400ml lasting about 75 days, app and 1h/4h/8h/24h timers, under 38 dB, auto-stop, key-lock |
Any public area of a building open twelve hours a day. Four or five refills a year instead of about 624 tank operations |
₹11,999 |
| 3. Vaayu wall or HVAC mount |
The same machine fixed at height or tied into the air handling |
In a hall the public can reach. It removes the machine from the daily round entirely |
fitting cost |
| 4. Sukoon or Boond if you could |
500ml for 270–320 sq ft with three 15ml scents included, or 300ml for a smaller room |
One administrative cabin, behind a door, where the task attaches to an existing habit and one person locks up |
₹1,899 / ₹899 |
| 5. A line on the closing checklist |
Which machine, which zone, what time, and an initial from whoever locked the zone |
With any water-based machine. An initial is a fact; an assumption is not |
₹0 |
| Not the argument being made: a health claim |
Nothing here says standing water in a tank is unsafe, and no page on this site will |
The case is a roster and a routine. That is honest, and in a twelve-hour building it is enough |
— |
Honest notes for buyers: fragrance in a medical facility is housekeeping and presentation, never treatment. Nothing on this page 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, Bluetooth 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 makes them suitable for a single administrative cabin with a named person emptying and drying the tank daily, and 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.
Mounted, locked, and out of the housekeeping conversation
SOSA Vaayu · wall or HVAC mount ₹11,999
The same machine, fixed at height or tied into the air handling rather than standing on a console table. The reason I keep pushing the mount in a clinic is that it removes the machine from the daily round entirely: there is no tank to carry to a sink, nothing to dry, nothing to put back, and no surface underneath it that housekeeping has to remember to wipe. One refill about every seventy-five days, a key-lock so the intensity stays where the SOP says it is, an auto-stop, and a schedule that runs the opening hours and stops. The annual routine is four or five visits by one person, which is a line procurement can model in ten minutes.
A note from Sonal
The clearest version of this I ever saw was a laminated card taped to the inside of a cupboard door in a medical centre in Vizag. Nine lines, in two languages, with a box for initials, and at the bottom a sentence somebody had written by hand: if the room smells different, tell Suresh, do not add drops. That card was better operational thinking than anything in the machine's own manual, and it worked for about fourteen months, which is roughly how long these arrangements last when they are done properly. Then the woman whose initials were in the boxes moved to a hospital job, and within six weeks the tanks were being topped up rather than emptied, and nobody noticed until a consultant mentioned that reception smelled heavy.
I do not tell that story to argue that people are careless, because they are not. I tell it because a routine that depends on one person's diligence is not a system, and a clinic open twelve hours a day, six days a week, is a building where systems survive and habits do not. That is the whole of the standing-water argument as I am willing to make it. Not a hazard, not a hygiene lecture, not anything a medical director would have to defend. A daily job with an owner, a deputy and an initial — or a machine that does not need one. If you can genuinely staff the first, buy the ₹1,899 machine and enjoy it. If you cannot, do not buy a water tank.
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
Should a clinic worry about standing water in a diffuser tank?
Worry about it as an operating question. A tank has to be emptied, rinsed and dried at close and refilled at open, which is about 624 operations a year per machine in a building open six days a week. Nothing here suggests standing water is a risk to anybody — the point is that the task needs a named owner, and in most clinics it does not have one.
What is the actual daily routine for an ultrasonic diffuser?
At close: switch off at the unit, unplug, carry the tank to a sink, pour out the remaining water, rinse, wipe out with a dry cloth kept for the purpose, and leave it inverted overnight to dry. At open: refill with fresh water and add three to six drops, per tank rather than per litre. About five minutes in the evening and two in the morning, plus a descale of the 2.4MHz plate periodically in hard-water cities.
What goes wrong when the tank is topped up instead of emptied?
Nothing visible, which is the difficulty. Two or three weeks later the fragrance in the room reads flat and dull rather than clean, and the usual response is to add more drops, which makes the room heavier without making it fresher. It is a presentation problem and a maintenance one, and the correct response is to go back to the routine rather than to increase the dose.
Can we just buy an ultrasonic and be disciplined about it?
In one administrative cabin, behind a door, where the person who locks the room owns the tank — yes, and the
Sukoon at ₹1,899 with three 15ml scents included is the right machine for it. Across a public waiting hall needing five or six machines, two floors and two shifts of housekeeping, the routine does not survive a real roster, and the waterless
Vaayu at ₹11,999 is the honest answer.
How often does a waterless machine need attention instead?
About four or five times a year. A 400ml fill in the
Vaayu lasts roughly seventy-five days on a clinic's opening hours, so it is a refill visit each quarter plus a walk-in check on the intensity. There is nothing to empty, nothing to dry, no sink involved and no daily line on the closing checklist.
Two names, or no tank
624 operations a year — or four refill visits
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, Bluetooth app control with 1h/4h/8h/24h timers, adjustable intensity, under 38 dB, auto-stop and a key-lock for public areas, freestanding, wall-mounted or HVAC-tied. The water-based Sukoon is ₹1,899 with three 15ml Hotel Collection scents included and the Boond is ₹899, both right for a single administrative cabin with a named owner. Free shipping above ₹499, and a portion of every order supports girl-child education through Nanhi Kali.
See the Vaayu · ₹11,999 See the Boond · ₹899
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About this guide: Written by Sonal Sahani, ISIPCA Versailles-trained founder and perfumer at SOSA Home & Body, on why standing water in a diffuser tank is a rostering question rather than a clinical one in a multi-speciality clinic, with the daily routine written out task by task, the ownership structure that makes it survive, the week of leave that usually ends it, and the waterless alternative for public areas.
Facts verified August 2026: Product facts used in this guide. SOSA Vaayu ₹11,999: waterless cold-air nebulising diffuser, atomises undiluted fragrance oil to a dry residue-free nano-mist with 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 × 80.5 × 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 ₹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 ₹1,899 (500ml, 270–320 sq ft, 16–18 hours on low, 3–6 drops per tank, steady/2H/4H timers, three 15ml Hotel Collection scents included), Boond ₹899 (300ml), Megh ₹3,499 (6 litres). Hotel Collection water-based fragrance 15ml ₹299, 100ml ₹999, 300ml ₹1,799, Pack of 7 at 15ml ₹1,799 against ₹2,093 bought singly; the Vaayu and Aangan take their own undiluted oil rather than these water-based bottles. Alcohol-free reed diffusers from ₹749, requiring 24–72 hours to reach their working level. Free shipping above ₹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.