That answer is not a hedge and it is not modesty about what a fragrance can do. It is a statement about one particular room, and the reason this page exists rather than pointing you at the general recovery answer is that post-anaesthesia recovery is different from every other fragrance-free space in a day-care hospital in two specific, practical ways that are worth a page of their own.
The first is capacity. Ambient fragrance everywhere else in commerce rests on a quiet assumption nobody states: that the person in the room can notice it, form a view about it, and if they dislike it, get up and stand somewhere else. In a lobby that assumption holds. At a billing counter it holds. In the family lounge it holds, and if it did not, the person could walk out of the front door and stand in the car park. In a recovery bay every part of that assumption fails at once. The person is lying down, they are where they have been put, they did not choose the room, they cannot leave it, and for the first part of their time there they are in no position to evaluate anything about it or to tell anybody they would rather it was not there. A room where the occupant cannot notice, judge or object is a room you do not add discretionary things to. That is an ordinary decency argument rather than a clinical one, and it is enough on its own to close the question.
The second is the curtain. A recovery bay in most day-care facilities is not a room with a door. It is a bay with a rail and a curtain, opening onto a corridor and sharing air with it, and three or four of those bays share the same air as each other. A curtain is a visual and acoustic screen; it is not a boundary for air and it never has been. Which means that deciding recovery gets nothing is not only a decision about recovery. It is a decision about the corridor that recovery opens onto, about the step-down or sub-wait area at the end of it, and about anything else hanging off that same length of air. The zero does not stop at the curtain, because air does not.
And one plain fact, stated as the plain fact it is. Nausea after anaesthesia is ordinary and widely known. That is reason enough for a recovery area to be kept neutral, and this page will say nothing whatsoever about a fragrance helping it, relieving it, worsening it or causing it, because there is no such claim to make and SOSA makes none. What may be introduced into the air of a building with a surgical zone is decided by your own clinical leadership, your infection-control policy and your facilities engineers, and their decision overrides every recommendation here - including their decision that more of the building than this page suggests should stay neutral.
Does the fragrance-free rule stop at the recovery curtain? No, and this is the part that is most often got wrong on a drawing. A curtain screens sight and softens sound; it does nothing to air. A curtained bay shares one connected body of air with the corridor it opens onto, with the bays either side of it and with whatever sits at the end of that corridor. So the fragrance-free boundary has to be drawn at the last real door on the route, not at the curtain rail - and a machine in that corridor is a machine in recovery.
Where should the fragrance go instead? Into the public half of the building, where people can notice it, judge it and walk away from it: the entrance and lobby, the reception and billing counter, consultation waiting and the attendant lounge. A SOSA Sukoon at ₹1,899 with the water-based Hotel Collection from ₹299 covers a single reception; a large connected front of house is the waterless SOSA Vaayu at ₹11,999. None of it goes past the clinical door.
The wrong reason is squeamishness - a vague sense that fragrance and medicine do not go together, which is not an argument and does not survive a determined facility director with a quotation in front of them. The right reasons are specific, and there are three.
First, the person in the bay has less capacity to deal with the room than anybody else in your building. Every ambient scenting decision ever made rests on an assumption so obvious that nobody writes it down: the occupant can perceive the room, form an opinion about it, and remove themselves if the opinion is bad. A shopper walks out. A hotel guest asks for a different floor. A family member in your lounge steps outside for ten minutes and takes a phone call in the car park. In post-anaesthesia recovery, none of that is available. The person is lying where they were put, in a bay they did not choose, for a length of time they do not control, and in the earliest part of that time they are not in a position to evaluate the room at all, let alone tell anybody that they would rather the air was plain. You do not add optional things to a room on those terms. That is a matter of ordinary decency and it is entirely within what a fragrance supplier is competent to say.
Second, the room is deliberately uneventful, and that is its design. A recovery area is arranged so that almost nothing in it changes. The lighting is even and it stays even. The surfaces are plain. There is no music, no signage worth reading, no decoration to speak of, nothing on the walls that rewards attention. That is not a failure of interior design; it is the point. The only things in that room that are supposed to change are the people in it, and the staff are there to watch the people. Anything you introduce into that space is one more element in the room that somebody has to account for, that somebody has to clean around, that somebody has to remember to switch off, and that nobody asked for. A discretionary variable in a deliberately invariant room is a bad trade even when it is a completely harmless one.
Third, nausea after anaesthesia is ordinary and widely known. That is a plain fact about the day, and it is reason enough on its own for a recovery area to be kept neutral. It is also the exact point at which pages like this one usually go wrong, so let me be blunt about where the line is. Nothing on this page says that a fragrance helps it, relieves it, worsens it or causes it. SOSA makes no such claim in either direction, no SOSA product is a medical device or validated for clinical use, and if you ever see a fragrance supplier make a claim in either direction about post-anaesthesia nausea, stop reading them. The fact belongs here as a reason a room stays plain, and nowhere else.
And then the practical one that decides it in buildings where the principle was already accepted. A recovery bay shares air with a corridor. Curtains screen sight and soften sound and do absolutely nothing to air, so "recovery gets nothing" only means something if the corridor outside the curtain gets nothing too. This is the most common way a good fragrance-free policy quietly fails: the drawing says recovery is zero, and a unit sits twelve feet away at the end of the corridor because that is where the free socket was.
The commercial consequence, since this is a commercial page and I would rather say it out loud: there is no sale in this room and there never was. A recovery bay has no dwell value, nobody in it is forming a purchasing impression of your facility, and the person who will remember your building - the attendant who sat for four hours waiting for them - is somewhere else entirely. Scent the room where that person is sitting. A portion of every SOSA order supports girl-child education through Nanhi Kali.
If you take one operational instruction from this page, make it the second half of that sentence. Almost every facility I have spoken to accepts the recovery zero immediately - it is the easiest agreement in this whole bank to get. What they have very often not done is follow it outward. They have drawn a rectangle around the recovery bays on the plan, written "fragrance-free" in it, and left the corridor, the step-down chairs and the sub-wait area outside the rectangle, where they are physically part of the same body of air.
Go and stand in the corridor outside your own recovery bays and look for three things. Where is the nearest socket, and is there anything plugged into it. Where is the nearest supply grille, and which way is it throwing. And what is at the other end of this corridor - because that is the room whose air is continuous with recovery whether the drawing says so or not.
The second practical instruction is about people rather than air. The staff who work a recovery area are not the staff who work the front desk, they are usually not in the meeting where the scenting decision is made, and they are the people who will be standing in whatever you decide for eight to ten hours. Ask them before anything is bought, and ask them again three months later. If any of them mentions it, that is a recalibration signal and not a tolerance problem, and the recalibration in a clinical area is not "turn it down" - it is "move it, and move it further than you think".
And the third is the one that fails on a timescale of months rather than days. Write recovery, the recovery corridor and the step-down area on the drawing as named rooms in the fragrance-free list, with a one-line reason beside each. A principle that lives in a director's head gets reinterpreted by a helpful new supervisor in month seven who thinks the bay looks bare. A list of named rooms on a drawing, with reasons, does not.
Capacity, the unchanging baseline, and the curtain that makes this a corridor decision
There are three things that decide this question, and none of them are about the fragrance. The first is capacity: what the person in the room is able to do about the air they are in. The second is the character of the room itself, which is deliberately uneventful and is designed to stay that way. The third is the physical one that decides how far the answer reaches - a recovery bay is curtained rather than doored, so its air is continuous with a corridor, and the zero has to travel with the air rather than stopping at the fabric.
It is worth saying what this page is not. It is not the general recovery page, which argues the case for keeping post-procedure recovery neutral across the board. This one is narrower and more specific: it is about the bay where somebody is coming round, and about the three or four bays and the corridor that share air with it. If your question is the broader one about post-procedure areas in general, that is a different page. If your question is which rooms in the building can be scented, that is a different page too, and a more cheerful one.
It is also not a physiology page and it will not become one. You will find nothing here about anaesthesia, about what happens to a person's senses, about recovery times or about anything that belongs to a clinician rather than to somebody who sells diffusers. Every time the argument on this page reaches the edge of that territory, it turns around and goes back to the room and its air, because that is the only part of this I am competent to write about. A fragrance supplier can tell you what a machine puts into a body of air and how far that body of air extends. A fragrance supplier cannot tell you anything about the people in it, and should not try.
One more framing before the detail, because it explains why this page is a straight no rather than a graded answer. In most of this bank the answer to "should this room be scented" is a level: high-ish at the entrance, low in the lounge, lower again in a small enclosed waiting room. That gradient is real and it is the honest way to think about the public half. Recovery is not on the gradient at all. It is not the bottom of the scale; it is off the scale, in the same category as the procedure room and the sterile store, and the difference between "the lowest setting" and "nothing" is the whole point rather than a rounding error. A machine at its lowest setting is still a machine in the room, still something plugged in, still something that can be turned up by somebody who does not know why it was set that way. Nothing is a state that cannot drift.
Work down the rooms of a day-care hospital and watch that permission weaken. In the entrance it is at its strongest - dwell is seconds, the doors are opening constantly, nobody is captive. At the reception counter it is slightly weaker, because a person queueing for check-in is standing where the queue puts them for as long as the queue takes. In the attendant lounge it is weaker again, which is exactly why the lounge is dosed low even though it is the most legitimately scentable room in the building: somebody is sitting in that air for four hours and cannot easily relocate without losing their seat or missing being called. In a small enclosed private waiting room, weaker still, which is why a costlier room gets a lower level rather than a higher one - its occupant is less able to complain, not more entitled to more.
Now step past the clinical door and the permission does not weaken, it disappears. In a pre-operative holding area a person is gowned, fasting since the previous night and waiting to be called, which is already a room nobody should be marketing at. In post-anaesthesia recovery, the last of it goes. The person is lying down. They are in the bay they were put in. They did not choose it and cannot change it. They will leave when somebody else decides they can leave. And for the earliest part of that time they are in no state to form or express a view about the room at all.
That is a room you do not add optional things to, and I want to be careful about the shape of the argument because it is an ethical one rather than a clinical one. I am not saying fragrance would do anything to that person, in either direction - I do not know and neither does anybody selling diffusers, and the claim is not available to be made. I am saying that the ordinary justification for imposing an ambient scent on a stranger has evaporated, and once it has, you need a positive reason to add something rather than a positive reason to leave it out. There is no positive reason. There is no dwell to lengthen, no arrival impression to shape, no brand moment to land, nobody forming a view of your facility's finish, and nobody who will describe this room to a friend afterwards. The entire commercial case for ambient scenting is absent from this room. What remains is an imposition on somebody who cannot decline it, in exchange for nothing.
And one plain fact of the day, stated as the plain fact it is and used for exactly one purpose: nausea after anaesthesia is ordinary and widely known. That is reason enough for a recovery area to be kept neutral. This page says nothing at all about a fragrance helping, relieving, worsening or causing it, SOSA makes no claim in either direction, and no SOSA product is a medical device, a clinical product or an air-treatment device or is validated for use in a clinical environment.
It is not unfinished. It is finished to a completely different brief. The design intent of that room is that nothing in it changes, so that the only things changing in it are the people, and the staff working it can keep their attention on the people rather than on the room. Everything that has been left out of that space has been left out on purpose. It is an environment engineered to be boring, and the boringness is the feature.
Ambient fragrance is, by definition, the opposite of that. It is an element added to a room to be perceived. In a lobby that is the whole point and it is worth paying for. In a room whose brief is invariance, it is a variable, and a variable in that room has costs that have nothing to do with what it smells like.
It is something somebody has to account for. Every object in a clinical area belongs to somebody, is on somebody's list, and has a reason for being there. A diffuser has no owner in that room, appears on no list, and answers no question anybody working there has asked.
It is something somebody has to clean around. Surfaces in clinical areas are cleaned to a routine, and anything sitting on one either moves or is worked around. A machine is a thing on a surface. A reed diffuser is a thing on a surface with an open liquid in it. Neither is welcome on a surface whose entire job is to be wiped.
It is something somebody has to power. Sockets in a clinical area are not spare capacity looking for a use. The ones that exist are there for reasons, and a fragrance machine competing for one of them is an argument you should not be having and will rightly lose.
And it is something that can drift. This is the argument I find carries most weight with people who run facilities, because they have seen it happen with other things. A setting is a number somebody can change. A machine at its lowest setting is one helpful adjustment away from not being at its lowest setting, and the person who makes that adjustment in month fourteen will not know why it was set low, because the reason lived in a meeting they were not in. A zero cannot drift. There is no dial on an absence. That is the practical difference between "a very low setting" and "nothing", and it is the whole reason this bank keeps insisting on the second phrasing rather than treating them as near-neighbours.
None of the five costs above is a claim about fragrance affecting anybody or anything clinical. They are facts about objects in rooms, lists, sockets, cleaning routines and dials. That is deliberate. Those are the grounds a fragrance supplier is entitled to argue on, and they are sufficient.
A recovery bay in a typical day-care hospital has a rail and a curtain. It does not have a door. Three, four or six of those bays sit along one side of a space that opens onto a corridor, and at the end of that corridor there is usually a step-down or sub-wait area where people sit in chairs before discharge, and a set of doors to somewhere else. A curtain is a visual screen and a partial acoustic one. To air, it is not there. Draw the honest boundary of that body of air and it includes every bay, the space they open onto, the corridor, and whatever else opens onto the corridor without a door of its own.
Which means the zero is bigger than the rectangle on the drawing. If recovery gets nothing and the corridor outside it has a unit in it, recovery has something. That is not a subtle leak through a door undercut or a slow migration through a ceiling void; it is simply the same room with fabric hanging in it. This is the single commonest way a well-intentioned fragrance-free policy in a day-care hospital turns out not to be one, and it almost never happens through bad faith. It happens because the corridor is where the free socket is, because a corridor feels like circulation rather than a place, and because whoever placed the machine was thinking about where it would be least in the way rather than about which body of air they were standing in.
So the working rule, and it is worth writing in these words on the drawing itself. The fragrance-free boundary goes at the last real door on the route, not at the curtain rail. Walk the route a patient takes out of the procedure area and back toward discharge, and find the last door on that route that is genuinely a door - hinged or sliding, latched, normally kept closed, in a full-height frame with a proper stop. That door is the boundary, and everything on the clinical side of it is in the zero, including the corridor, including the step-down chairs, including the store cupboard that opens off it, whether or not anybody has ever thought of those as clinical spaces.
Three things do not count as that door, and all three get mistaken for it. A curtain does not count. An archway or a cased opening with no leaf in it does not count - it is a wall with a hole in it, and the two spaces either side of it are one volume. And a door that is propped open all morning because of trolley traffic does not count either, because a door only ends a body of air when it is shut; a door that is open for six hours a day is a doorway for six hours a day. If the route needs to be open, the boundary moves back to the last door that is genuinely kept closed, which in some layouts is further from the clinical zone than anybody expected and takes a chunk of what you hoped to scent with it.
Two more mechanisms to check on the same walk, both of which can carry air across a boundary that looks solid. The first is a return grille: if the corridor or the recovery space has a return, find out where it goes, because a shared return path can connect two spaces that have a perfectly good closed door between them. The second is a supply grille near your proposed machine position on the public side, because a supply grille is a directional airstream and a unit placed in it becomes a distribution system somebody else designed. Both are engineering questions rather than fragrance questions and both are answered by the facility's own HVAC consultant, not by a page and not by a supplier. A scenting unit is never ducted into or placed in air handling that serves a clinical zone, and no change is ever made to air handling in order to make fragrance last longer.
And the last word belongs to the people who run the zone. Your clinical leadership, your infection-control policy and your facilities engineering own this boundary. They can move it further into the public half than this page suggests, they can decide the corridor and the sub-wait extend the zero into rooms you had counted on scenting, and they can rule out the whole idea. All of those are complete and legitimate answers, and their decision overrides everything written here.
- Walk the discharge route and find the last door that is genuinely kept shut.
- Put recovery, its corridor and the step-down area on the zero list as named rooms.
- Check every socket on the clinical side of that door for anything already plugged in.
- Get the boundary signed off by your clinical, infection-control and engineering leads.
Where the register actually lives instead, and at what level
So if the register does not go in recovery, where does it go? Into the public half, where people can perceive it, form a view about it and walk away from it: the entrance and lobby, the reception and billing counter, consultation waiting, and the attendant or family lounge. That last one is the room worth thinking hardest about, because it is where the person most affected by what is happening in recovery is actually sitting, and it is the most legitimately scentable room in a day-care hospital.
There are seven registers in the water-based Hotel Collection, each SOSA's own hotel-inspired interpretation - SOSA is independent and not affiliated with, endorsed by or connected to any hotel brand. The steer for a building with a surgical zone is narrower than for any other commercial vertical and it is a context steer rather than a taste one: clean and unsweet reads right here, because a heavy or plush character over a warm enclosed room in a clinical building reads as covering something.
White Tea Serenity - white tea, aloe and cedar - is clean, weightless and spa-like, and it is the register that most naturally reads as clean rather than as scented. Quiet Luxury - white tea, bergamot and cedar - is hushed and polished, the same idea with a little more finish, and it is the safest single decision in the collection for a very mixed public. Forest Suite - cedarwood, vetiver and green leaves - is grounding and green and the right answer where the fit-out has stone, timber or real planting, because it reads as structural rather than decorative.
Tea Garden - jasmine, green tea and white tea - keeps its jasmine inside the tea rather than on top of it, which makes it the least risky floral for a softer, more residential front of house, though it is a step warmer and wants a correspondingly lower setting. Warm Welcome - citrus, floral and sandalwood - is a genuine threshold register for a family-facing neighbourhood facility, used at a fraction of what a hotel would use. Old-World Glamour - amber, violet and woods - is plush and evening-elegant, and plush is precisely the character that reads as covering in a clinical building. Lobby Bar - citrus, pepper and amber - is bold and after-dark and has no home in a day-care hospital at all; turning a theatrical register down produces a quiet theatrical register, not an appropriate one.
Those seven are the water-based Hotel Collection and they run in the SOSA ultrasonics. The Vaayu and the ducted machines run four hotel-inspired waterless blends instead, supplied with the machine as one of three bundle choices. Those are two different fragrance systems rather than the same bottle in two sizes, and the ₹299 water-based bottle never goes into a Vaayu or an HVAC machine. I will not rank the seven against each other on measured throw or longevity: SOSA does not publish that comparison, and connected volume, ceiling height, ventilation rate, automatic-door traffic and the setting you choose swamp any difference between one blend and another in a room nobody has stood in.
And the level, since level is what actually goes wrong. One register across the whole public half, at two or three written levels, is what makes the building read as considered rather than as a collection of rooms with air fresheners in them. Set it lower than feels like it is working, write the register and the number on a card taped to the machine, judge it from the doorway on a Monday morning rather than from behind the desk on a Friday evening, and do not touch it for a fortnight. Your front desk, billing and housekeeping teams are in that air eight to ten hours a day and are the most exposed people in the building; if any of them mentions it, that is a recalibration signal rather than a tolerance problem, and switching a named unit off for the afternoon should be something anybody on the desk can do without finding a manager first.
| Scent | Why it suits the mood |
|---|---|
| Post-anaesthesia recovery bays · nothing | Nothing at all - not a lower setting, not a subtler register, not a passive reed. The occupant cannot notice, judge or leave the air, the room is designed so that nothing in it changes, and nausea after anaesthesia is ordinary and widely known, which is reason enough to keep it plain. No claim is made here in either direction about fragrance and that fact. |
| The recovery corridor and step-down area · nothing | The same zero, for a purely physical reason: a curtained bay shares one connected body of air with the corridor it opens onto. This is where good fragrance-free policies usually fail, because the corridor is where the free socket is. Put the boundary at the last real door on the route, not at the curtain rail. |
| The attendant or family lounge · White Tea Serenity or Quiet Luxury, low | The room where the person waiting for somebody in recovery is actually sitting, often for three to five hours, and the most legitimately scentable space in the building. A 500 sq ft lounge at 12 ft is 6,000 cubic feet, about 170 cubic metres. Set it for the person at hour four, not the person at minute three. |
| Entrance, reception and billing · the same register, written levels | One register across the public half at two or three written levels is what makes a building read as considered. The entrance carries the least because the automatic doors exchange its air constantly; the counter is where the register really lives. Nothing past the clinical door, at any setting, ever. |
The buying answer, once the boundary is drawn and approved. For a single reception an ultrasonic is usually the whole purchase: the SOSA Boond at ₹899 for a small enclosed desk, or the SOSA Sukoon at ₹1,899 for a reception and billing area, both running the water-based Hotel Collection from ₹299 with 100ml refills at ₹999. The pack of seven 15ml bottles at ₹1,799 is how you audition registers in your own lobby air rather than choosing from a description. If the attendant lounge runs from seven in the morning until eight at night without a break, the SOSA Megh at ₹3,499 and its 6 litre tank saves somebody refilling at lunchtime.
Do the arithmetic by hand before you choose a machine, and state your ceiling assumption every time. A 400 sq ft reception at 12 ft is 4,800 cubic feet, and 4,800 divided by 35.3 is about 136 cubic metres. A 600 sq ft reception and billing area at 12 ft is 7,200 cubic feet, about 204 cubic metres. A 500 sq ft attendant lounge at 12 ft is 6,000 cubic feet, about 170 cubic metres. A 1,000 sq ft lobby at 10 ft is 10,000 cubic feet, about 283 cubic metres, and the same footprint at a double-height 18 ft is 18,000 cubic feet, about 510 cubic metres. Against those numbers the waterless SOSA Vaayu at ₹11,999, rated for approximately 1000 cubic metres of connected air, is generously sized for one counter and correctly sized for a large open connected front of house running all day on a timer.
In a building with a surgical zone the Vaayu's argument is what it does not do: waterless cold-air nebulising of undiluted oil, so no water, no humidity and no wet residue anywhere. It takes a 400ml tank, mounts freestanding, on a wall or into HVAC, runs on DC 12V / 1A at 5W so it needs a live socket, and carries CE, RoHS and SGS. The Bluetooth app and timer matter more here than in any other vertical, because they let you scent your OPD hours and nothing else. It is an ambient fragrance product for public areas. It is not a medical device, not an infection-control or air-treatment device and it is not validated for clinical use: it adds scent rather than removing odour, and it cannot travel through a closed door. The ducted machines - Aangan at ₹25,999 for approximately 8,000 to 10,000 sq ft and Meenar at ₹38,500 for approximately 12,000 to 18,000 sq ft - are engineering decisions taken with your own HVAC consultant, and are never ducted into air handling that serves a clinical zone.
If what you want is no plug, no noise and nothing to switch off at a small public counter, the SOSA reed diffusers are their own registers from ₹749, lasting about 6 to 10 weeks: Morning Freshness at ₹749 is Malabar lemon, mint and eucalyptus, Mountain Breeze at ₹849 is Himalayan pine, sage and cedar and sits closest to a healthcare desk, Garden Bloom at ₹799 is British rose and night-blooming jasmine, Evening Calm at ₹799 is Kashmir lavender and chamomile, and Fresh Brew at ₹849 is Coorg coffee and Kerala vanilla, which is the wrong shape for a hospital counter for the same sweetness reason as Old-World Glamour. The 130ml is from ₹1,249, with 300ml refills at ₹2,399 and 500ml at ₹3,499. A reed belongs in the public half on the same terms as a machine: it is passive and quiet, which makes it easy to forget, and a forgotten object on the wrong side of a door is still on the wrong side of a door.
To go further into the parts this page only touches: the cheerful version of the same argument, listing every room that can carry a register and the test for anything ambiguous, is in which areas of a day-surgery centre are most appropriate for ambient scenting. The step-by-step method for drawing and governing the boundary described here is in can a day-care hospital create separate scented and fragrance-free zones. And the single ordered answer covering every area from entrance to recovery is in where a day-care hospital should actually use fragrance.
What SOSA does not publish and this page will therefore not invent: consumption rate, refill frequency, monthly running cost, machine lifespan, minimum order quantity or installation lead time. Those depend on run hours, connected volume and setting, and they are yours rather than ours. That conversation happens with your facility plan and your fragrance-free zone list in hand on WhatsApp at +91 96192 18531. Bulk orders are welcome, custom label or logo on product is available, and bespoke composition is a real SOSA service discussed there rather than priced on a page - though the cheaper honest answer comes first, which is that one of the seven registers held consistently already is a signature, because consistency makes a signature and uniqueness does not.
The SOSA scenting range
SOSA sells two different systems and one of the commonest mistakes is mixing them up. Size by the connected air volume of the room you are actually scenting - which in a day-care hospital is almost always the entrance, reception, billing and attendant lounge alone - floor area multiplied by ceiling height gives cubic feet, and cubic feet divided by 35.3 gives cubic metres. A door that stays shut ends one volume and begins another.
| Machine | System | What it is for | Price |
|---|---|---|---|
| SOSA Boond | Ultrasonic · water-based | A small desk or corner unit for one enclosed room - runs the water-based Hotel Collection | ₹899 |
| SOSA Sukoon | Ultrasonic · water-based | A larger ultrasonic for a reception or consultation room - Hotel Collection from ₹299 | ₹1,899 |
| SOSA Megh | Ultrasonic · 6L tank | A large-tank ultrasonic for a bigger lounge that runs all day | ₹3,499 |
| SOSA Vaayu | Waterless cold-air nebulising | The commercial machine - approx 1000 m3 of connected air, Bluetooth app and timer, no water and no humidity | ₹11,999 |
| SOSA Aangan | HVAC nebulising | Ducted scenting for approximately 8,000 to 10,000 sq ft | ₹25,999 |
| SOSA Meenar | HVAC nebulising | Ducted scenting for approximately 12,000 to 18,000 sq ft | ₹38,500 |
Two systems, and they are not interchangeable. The ultrasonics - Boond, Sukoon and Megh - run the water-based Hotel Collection from ₹299. Vaayu and the HVAC machines run waterless nebulising oil; the ₹299 water-based bottle never goes into a Vaayu. SOSA blends are SOSA's own hotel-inspired interpretations and SOSA is independent and not affiliated with any hotel brand. A portion of every order supports girl-child education through Nanhi Kali.
- Vaayu ₹11,999 - waterless cold-air nebulising, approx 1000 m3 connected air, Bluetooth app and timer, 400ml tank, freestanding or wall / HVAC mount, DC 12V / 1A, 5W, mains powered, CE / RoHS / SGS.
- Aangan ₹25,999 for approximately 8,000 to 10,000 sq ft and Meenar ₹38,500 for approximately 12,000 to 18,000 sq ft - both ducted into HVAC.
- The ultrasonics - Boond ₹899, Sukoon ₹1,899, Megh ₹3,499 - run the water-based Hotel Collection from ₹299, with 100ml refills at ₹999.
- Not published, and therefore never stated on this page: consumption rate, refill frequency, monthly running cost, machine lifespan, installation lead time or any minimum order. Those go to WhatsApp +91 96192 18531.
Versailles
A day-care hospital is the most careful room I write about, and I want to be plain about why. Somebody walks in at seven in the morning to have a procedure. Their mother or their husband sits in your lounge for four hours with nothing to do but look at the walls and worry. And a few metres away, behind doors that should stay shut, there is a zone where none of this belongs at all.
So the answer here is not a stronger machine or a cleverer scent. It is a boundary. Entrance, reception, billing and the attendant lounge are the public half of your building and they are allowed to feel like somewhere that was thought about. Pre-op, procedure, recovery and everything clinical are the other half, and the honest answer for all of it is nothing. Not less. Nothing.
Two things I say to every facility that asks. Fragrance adds scent - it never subtracts one, so it cannot cover disinfectant, and a scent laid over disinfectant makes a third smell that reads worse than either. And the decision is not mine or yours alone: what is introduced into the air of a building with a surgical zone belongs to your clinical leads, your infection-control team and your engineers. I would rather lose the sale than have a page of mine used to argue past them.
Frequently asked questions
Facts verified September 2026: SOSA Vaayu ₹11,999 is a waterless cold-air nebulising diffuser rated for approximately 1000 m3 of connected air, with Bluetooth app and timer, a 400ml tank, freestanding or wall / HVAC mounting and a DC 12V / 1A, 5W mains supply. SOSA Aangan ₹25,999 covers approximately 8,000 to 10,000 sq ft and SOSA Meenar ₹38,500 approximately 12,000 to 18,000 sq ft, both ducted into HVAC. The ultrasonic machines - Boond ₹899, Sukoon ₹1,899 and Megh ₹3,499 - run the water-based Hotel Collection fragrance from ₹299, with 100ml refills at ₹999; that water-based bottle is not used in a Vaayu or an HVAC machine. Reed diffusers start at ₹749 and last roughly 6-10 weeks. A coverage rating assumes one connected body of air; scent does not travel through a closed door. Ambient scent research supports improved evaluations of a space and its service, longer dwell and stronger recall at moderate effect sizes - it does not support claims about bookings, fees or retention. Fragrance adds scent and does not remove, neutralise or purify odour, and no SOSA product makes any health, antibacterial or air-purifying claim. No SOSA product is a medical device, a clinical product, an infection-control product or an air-treatment device, and none is validated for use in a clinical environment. Nothing in this guide is clinical, infection-control or engineering advice: in a facility with a surgical or procedural zone, what may be introduced into the air is governed by the operator's own clinical leadership, infection-control policy and facilities engineering, and their decision overrides every recommendation here. SOSA blends are SOSA's own hotel-inspired interpretations; SOSA is independent and not affiliated with any hotel brand. Prices and availability are subject to change - see the live product pages.