Here is the summary before the working. The open gallery with the model in it takes the arrival level, which is still low, because it is the largest volume, people move through it rather than sitting in it, and the doors cycle. The sample apartment takes far less, and the reason is a difference in kind rather than in degree: it is pretending to be a home and is being read as one, so the brief is that it should read like a home, which means very little and nothing at all that says commercial premises. The negotiation room takes the lowest level in the building and arguably nothing, because it is small, doored and long-dwell, holding a few people for a long time in a conversation that is not easy.
Those three rooms are unusually different from each other, and that is what makes this the most useful page in this block. In most buildings I write about, the rooms differ mainly in size. In a sales gallery they differ in function, and the function of each one tells you what the air is allowed to do. The gallery is a public volume that people arrive into. The sample flat is a piece of set design whose entire argument is that it is domestic. And the negotiation room is a small private space where a number gets agreed. Applying one level across all three is the commonest mistake in a sales gallery, and it always errs in the same direction, which is too much in the smallest room.
Let me deal immediately with the temptation this page exists near, because it is the reason Rule three exists in my own writing. I make no claim about what a fragrance does to a person in a negotiation room. Nothing about how a buyer feels, nothing about comfort, ease, confidence, reassurance or the tone of a conversation, in any phrasing at all. That claim is not supported, it is not available, and reaching for it in the room where somebody commits a large sum would be the least defensible thing in this entire bank. The argument for a low level in that room is physical and operational: a small volume, a closed door and a long sit. Nothing more is needed and nothing more is honest.
The standing limits. Fragrance adds a smell and has never removed one; no SOSA product treats, filters, dries, dehumidifies or purifies air - not the Vaayu at ₹11,999, not an ₹899 Boond, not a ₹749 reed. And no claim is made that any of this affects a booking, a site visit, an enquiry or a decision; the ceiling is improved evaluations of a space and its service, longer dwell and stronger recall of a space, at moderate effect sizes.
Why one register rather than a different scent for each room? Because a visitor walks through all three inside a single visit, usually within twenty minutes, and two registers do not sit side by side, they collide in the doorway. What a person notices in a multi-register building is never the individual rooms, it is the transition - the moment of walking from one thing into another, which announces that decisions have been made about the air. A single register at three different written levels produces the opposite experience: the building reads as one place that happens to be quieter in some parts, which is how buildings normally are. There is a practical reason too. Three registers means three products, three settings and three chances for the level to drift, in a building where nobody working there can smell any of them by mid-morning.
Is it acceptable to have no fragrance at all in the negotiation room? Yes, and it is a defensible default rather than a failure to specify. That room is the smallest connected volume in your building, it has a door that stays shut, and the people in it stay longer than anywhere else on site. It is also staffed - the same executive may sit in it several times a day. Nothing is a legitimate specification, and if the rest of the gallery is held at a low steady level the room will not read as a different place, because a shut door already makes it a different body of air and a quiet building does not produce a dramatic threshold. If you want something there, a reed diffuser from ₹749 is passive, local and has nothing to schedule, which is a far better fit for a small doored room than a machine.
The gallery volume is the only place the arrival level belongs, and three properties of it explain why. It is the largest connected body of air on site - a 2,000 sq ft gallery at a 12 ft ceiling is 24,000 cubic feet, which divided by 35.3 is about 680 cubic metres, and if the entrance is double height the number climbs fast. People are moving through it rather than sitting in it: they cross to the model, they walk around the model, they are led towards the sample flat. And the entrance doors cycle, which means a continuous exchange with outside air that no machine and no setting overcomes. Those three together mean that whatever you set here is experienced in short passes by people whose attention is on a scale model, and the correct level is one that registers as a property of a well-finished room rather than as anything anybody thinks about.
The sample apartment is the interesting one, and the instruction is not "the same but quieter". Everything in that flat is doing one job, which is to be persuasive about domestic life: the sofa is placed for a family, the beds are made, there is a bowl on the kitchen counter, the wardrobe is styled. The whole construction is an argument that this is a home. A home does not smell of a commercial product, and a visitor who walks out of the gallery, through a door, into a flat and meets the same intensity they met at reception has been told, at a level below conscious attention, that they are still in premises. That is the one thing the set design was trying to avoid. So the level there is very low, and the brief is qualitative rather than numerical: nothing that says building, nothing that says lobby, nothing that says shop. Honestly, in a lot of sample flats the right answer is nothing at all, with whatever carries through the open door from the gallery being sufficient.
And the volumes in a sample flat are not what the brochure area says, which matters if you are sizing anything. A 1,200 sq ft sample apartment at a 10 ft ceiling is 12,000 cubic feet, about 340 cubic metres - but only while the internal doors stand open. A 120 sq ft bedroom at 10 ft is 1,200 cubic feet, about 34 cubic metres, and the moment that door is shut it is its own volume that nothing reaches. Sample flats get shut up overnight and between viewings, and the small rooms accumulate whatever is in them, which is a ventilation point rather than a fragrance point.
The negotiation room takes the least, and the arithmetic settles it without any need to talk about people. A room of 180 sq ft at a 10 ft ceiling is 1,800 cubic feet, about 51 cubic metres. Set that against a SOSA Vaayu published for approximately 1000 cubic metres of connected air: the room is about one twentieth of it. Now add the two multipliers. The door is shut, so there is no exchange with the rest of the building and whatever is in there stays in there. And the dwell is the longest anybody does on your site - a serious negotiation with a family can run well past an hour, sometimes considerably past it. Small volume, closed door and long dwell do not add up, they compound, and every one of them points the same way. A level that is barely perceptible in the gallery is a noticeable level in that room by minute fifty.
There is a fourth consideration in that room and it is your own staff. The executive who sits in it is not there once; they are there several times a day, every day, for the sales period. Whatever you set in a 51 cubic metre room behind a shut door, they get all of it, repeatedly, and they will not be able to tell you about it because adaptation is ordinary. So: lowest in the building, or nothing, and a switch anyone can use. A portion of every SOSA order supports girl-child education through Nanhi Kali.
If you do one thing this week, walk the visit backwards with a tape measure and a sheet of paper. Start in the negotiation room, because it is the room that decides the specification and the room nobody measures. Write its floor area and its ceiling height. Multiply. Divide by 35.3. Then do the sample flat, room by room, marking which doors shut. Then the gallery, and if it is double height write the real height rather than the height you assume. Most developers can recite the carpet area of every unit type in the project and have never computed the volume of a single room in their own gallery, and that number is the entire basis of every decision on this page.
Then write the three levels down, on a card, in the back office. The unit, the register, the exact setting, the hours, the room. This is not bureaucracy; it is the only defence against the one failure mode that catches every scented commercial building. Levels drift upward, invisibly, over months. Week one it is set right. Week four somebody says it seems weak and nudges it, and they are not lying - they have adapted, which everyone in that building has. By month three the gallery runs at a level no first-time visitor would have chosen and nobody on the team can detect. The only people receiving it accurately are the ones walking in from the car park, and they will not tell you.
A note on the doorway, because it is where the argument for one register lives. Two registers do not sit beside each other, they collide. A visitor moving from the gallery into the sample flat in a multi-register building does not experience two nice rooms; they experience a transition, and a transition is an announcement. It says that somebody made a decision about the air, which is precisely the thing you are trying not to say. A single register at different levels produces the opposite: a building that is quieter in some parts than others, which is how ordinary buildings are and therefore reads as nothing at all.
And the rooms that get nothing, which should be written on the same card. The back office gets nothing, because it holds the people with the highest exposure in the building and buys nothing for anybody. Stores get nothing, especially any store holding printed collateral, fabric samples or finish boards, because those things go home with a buyer and should not carry your gallery with them. The model workshop gets nothing. And never reduce ventilation, close a vent or keep a door shut anywhere in this building so that a fragrance holds longer - not in a closed-up foggy January, not in a wet August, not in a May afternoon when the cooling is clearing the room faster than you would like.
Three volumes, three dwell times, three jobs - and the arithmetic that settles each one
Three variables decide the level in any room, and a sales gallery happens to give you three rooms that differ sharply on all three at once, which is why the answers are so far apart. The variables are connected volume, dwell and what the room is claiming to be. Most buildings vary on the first. A gallery varies on all three.
Do the arithmetic for all three rooms and keep the sheet. Floor area multiplied by ceiling height gives cubic feet; cubic feet divided by 35.3 gives cubic metres.
The gallery. At 2,000 sq ft and a 12 ft ceiling: 24,000 cubic feet, about 680 cubic metres. At 3,000 sq ft and 12 ft: 36,000 cubic feet, about 1,020 cubic metres. If the entrance is double height at 20 ft over 1,500 sq ft: 30,000 cubic feet, about 850 cubic metres, from a footprint that at a normal 10 ft ceiling would have been 15,000 cubic feet and about 425. Height is the most under-counted variable in this whole subject.
The sample apartment. At 1,200 sq ft and 10 ft: 12,000 cubic feet, about 340 cubic metres with every internal door standing open. Shut the bedroom doors and that figure is fiction - a 120 sq ft bedroom at 10 ft is 1,200 cubic feet, about 34 cubic metres, and is a separate body of air.
The negotiation room. At 180 sq ft and 10 ft: 1,800 cubic feet, about 51 cubic metres. That is about one twentieth of a Vaayu's published approximately 1000 cubic metres of connected air, and about one thirteenth of the gallery above.
Now put dwell alongside those numbers, because volume alone would mislead you. In the gallery, any one person spends perhaps five minutes in any one part of it, even if their visit is an hour. In the sample flat, fifteen to twenty minutes walking through. In the negotiation room, sixty minutes and frequently far more, seated, with the door shut. The smallest volume holds the longest dwell, which is the exact combination that always resolves downward.
And the third variable, which is the one people forget entirely. The gallery is claiming to be a well-appointed commercial space, and a quiet register is consistent with that claim. The sample apartment is claiming to be somebody's home, and a commercial register contradicts that claim directly. The negotiation room is claiming to be a private place to have a serious conversation, and anything that draws attention to itself contradicts that too. Volume tells you how much. Dwell tells you how much less. What the room is claiming tells you whether it should be there at all.
One local variable to write into the settings card. Lucknow gives a gallery three genuinely different operating conditions across a year: a hot dry April and May, with mean daily maxima near 38.2 and 39.9 degrees C and the year's humidity trough in those same hottest months, so cooling runs hard and rooms clear faster; a wet July and August of roughly 238 and 242 mm; and a cool damp winter from late November to February, January mean minima near 7.8 degrees C, days reaching only about 21.4, and fog common through December and January, with the building closed up much more of the day. A closed-up building exchanges less air with outside, which means the same setting behaves differently. Three settings per room, on a card. One register.
What makes it different is movement. A buyer in a gallery is walking: to the model, around the model, to the boards on the wall, across to where an executive is waiting. Nobody stands in one part of that volume for long, even on a ninety-minute visit. Short exposures at any one point are far more forgiving than a long continuous sit, which is why this is the one room where a level that would be wrong anywhere else is right.
The second property is the doors. A gallery entrance cycles constantly during opening hours, and every cycle exchanges a slug of the room's air with whatever is outside. That is not a problem to be solved, it is a fact to design around, and it has a specific consequence: the first several feet inside a gallery door are effectively outdoor air, and no setting changes that. Placing a unit near the entrance in the hope of creating a threshold moment is the commonest placement error in this room type, and it produces exactly two outcomes, both bad: either nothing registers at all, or somebody turns the output up until the rest of the room is over-scented in order to force something at the door.
Placement, therefore, is low and inward. Away from the entrance airstream, away from an air conditioning supply grille - because output dropped into a supply stream is carried away and thinned before it reaches anybody - and positioned so that what it produces enters the part of the volume people actually occupy, which is the bottom six feet. If your gallery is double height, that last point stops being a refinement and becomes the entire answer, and it has a page of its own.
The third property is the model itself, which is worth a sentence because it is unique to this building type. The scale model is the one object in the gallery that people gather around and lean over, often with several family members at once, for ten or fifteen minutes. That is the closest thing to a dwell point in the whole volume, and it is a reasonable place to check your level: stand at the model for fifteen minutes with somebody who has just come in from outside and ask them an open question at the end of it.
And the level that results, stated as a test rather than a number, because a number without your building is meaningless. Ask somebody who does not work for you and has been outside for ten minutes to walk in and tell you what they notice, as an open question rather than "can you smell it", which plants the answer. If they can name what the room smells of, it is too high. Not wrong, not unpleasant - too high for a room whose job is to be well finished rather than scented.
Think about what a sample flat is. Every object in it has been placed to support one proposition: that a family could live here. The furniture is scaled for domestic use rather than for display. The beds are made. There is crockery in the kitchen and a throw on the sofa. The wardrobes have been styled with clothes nobody owns. It is a set, and a good one, and the whole of its persuasive work happens below the level of conscious attention - the visitor is not thinking "this is well styled", they are imagining a Sunday morning.
Ambient fragrance at a commercial level contradicts that directly, and it does so at exactly the register where the set design is operating. A home does not smell of a lobby. It does not smell of a showroom or a boutique or a hotel threshold. If a visitor steps through the door of the sample flat and meets the same air they met at reception, the flat has been quietly reclassified in their mind as part of the premises, which is the single thing the styling was working to prevent. And unlike a visual mistake, nobody will ever articulate this one. They will simply find the flat slightly less convincing than it should have been.
So the brief is qualitative first and numerical second. Nothing that reads as a commercial product. Very little of anything. And in a good many sample flats the honest answer is nothing installed at all, with whatever drifts through the open door from the gallery being more than sufficient - because a sample flat is usually connected to the gallery by an open doorway during viewing hours, which makes it part of the same body of air anyway. That is worth checking before anybody specifies a second machine for it.
What the sample flat genuinely needs is air, not fragrance. These spaces get shut up between viewings and overnight, and small rooms with the doors closed accumulate whatever is in them: new furniture, new textiles, new joinery, laminate, adhesive, polish. The correct response is ventilation and time, and never the reverse - never keep a sample flat shut so that a fragrance holds, and never reduce air exchange anywhere in this building for any fragrance-related reason. Fragrance adds a smell and does not remove one; no SOSA product treats, filters, dries, dehumidifies or purifies air or removes anything a fit-out gives off. Open it up, air it properly before viewings, and judge the small rooms by nose first thing in the morning.
One more sample-flat specific point. If the flat contains fabric, bedding, upholstery or curtains that will be in place for the whole sales period, keep that in mind when you choose a level anywhere near it, because soft goods hold what is in the air far longer than hard surfaces do, and a level that seemed modest in month one is embedded in the furnishings by month six.
The arithmetic first. 180 sq ft at a 10 ft ceiling is 1,800 cubic feet. Divided by 35.3, that is about 51 cubic metres. Compare it with the gallery next door at about 680, and with a Vaayu's published approximately 1000 cubic metres of connected air. This room is one twentieth of that rating and one thirteenth of the room it opens off. If you take a setting calibrated for the gallery and apply it here, you are applying it to a volume more than an order of magnitude smaller.
Then the door, which is the multiplier people forget. A coverage rating assumes one connected body of air, and scent does not travel through a closed door. The corollary is the part that matters here: whatever is in a closed room stays in it. There is no exchange with the gallery diluting it, no doors cycling, nothing carrying it away. A small room with a shut door is the least forgiving space in any building, which is why the same logic produces the same answer for a trial room in a clothing store and a consultation cabin in a clinic.
Then dwell, which is the longest on your site by a wide margin. A negotiation about a premium apartment is not a five-minute signature. It is a family, a payment schedule, a set of questions that have been saved up, a call to somebody who is not in the room, and a period of silence while people think. An hour is normal and considerably longer is common. A level that is imperceptible at minute two is perceptible at minute fifty, because continuous exposure in an enclosed volume is a completely different thing from passing through.
Those three compound. Small, sealed and long is not three small reasons to go down, it is one large one, and it is why my honest default in this room is the lowest level in the building, or nothing at all. Nothing is a specification, not an omission. If the gallery outside is held at a genuinely quiet level, a negotiation room with no unit in it will not read as a different building - a shut door already makes it a different body of air, and quiet buildings do not produce dramatic thresholds.
And now the sentence this page exists to refuse. There is an obvious pitch available here and I am not going to make it. I make no claim about what a fragrance does to a person in that room - nothing about how a buyer feels, nothing about comfort, ease, confidence, reassurance, receptiveness or the tone of the conversation, in any phrasing whatsoever. That claim is unsupported, and in the room where somebody is committing a very large sum it would be the least defensible thing anybody in my industry could say. The case for a low level here is volume, door and dwell. That is complete on its own and it does not need help.
One operational note. The executive who uses that room uses it several times a day, every day. Whatever you set in 51 cubic metres behind a shut door, they receive all of it, repeatedly, and cannot report it accurately because adaptation is ordinary. So: the lowest setting or none, a switch anyone can use without asking a manager, and a reported reaction treated as a recalibration signal rather than a tolerance problem. No health or allergy claim is made in either direction. If you want something in there, a passive reed diffuser from ₹749 with nothing to schedule is a better fit for a small doored room than any machine.
- Measure all three rooms: area times height, divided by 35.3. Start with the smallest.
- Pick one register for the building. Never two, because they collide in the doorway.
- Gallery at arrival level, sample flat far less, negotiation room lowest or nothing.
- Write unit, register, setting, hours and room on a card in the back office.
One register, three written levels, and the doorway that decides it
One register for the building, chosen once, held for the sales period. There are seven 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 choosing constraint here is unusual and it is worth naming, because it is what makes this decision different from choosing for a shop. Your register has to work at three very different levels in three rooms with three different claims, and one of those rooms is pretending to be a home. That last requirement narrows the field hard, because it rules out anything that reads as hospitality, retail or lobby even when turned down.
Quiet Luxury is white tea, bergamot and cedar - hushed, polished and unsweet, and the one I would run given a single decision and nothing else known about the building. It holds presence across an open gallery at a low setting and it thins to almost nothing without collapsing, which is the property you need when the same register has to appear at three levels. White Tea Serenity is white tea, aloe and cedar - clean, weightless and spa-like, and the register that most readily reads as clean rather than as scented. That is the best fit for a building containing a sample flat, because clean is a thing homes are and scented is a thing premises are. Forest Suite is cedarwood, vetiver and green leaves, the driest of the three and the one most likely to be received as a property of the building rather than a decision somebody made, which makes it a good choice where timber, stone and a model in a daylit room are doing the visual work.
The four I would keep out of a sales gallery, and each fails for a reason specific to these three rooms. Lobby Bar is citrus, pepper and amber, bold and after-dark, and turning a theatrical register down gives you a quiet theatrical register rather than an inconspicuous one - in a sample flat it is actively wrong. Old-World Glamour is amber, violet and woods, plush and evening-elegant, and plush is the exact quality that accumulates over a long sit, which makes it the worst possible choice for a building whose most sensitive room is a sixty-minute negotiation. Warm Welcome is citrus, floral and sandalwood, a genuine hotel-threshold register, and the threshold reading is what a sample flat must not have. Tea Garden is jasmine, green tea and white tea, the least risky floral in the collection, but a floral of any weight is the most likely of all to be named by a visitor, and being named is the failure condition in every room here.
I will not rank the seven against each other on measured throw or longevity. SOSA does not publish that comparison, and the variables that dominate belong to your building: connected volume, ceiling height, air exchange, how often the doors cycle, and the setting.
And there is no heritage, traditional, attar, oudh or rose-water register in the SOSA commercial range. The machines run the seven Hotel Collection registers and nothing else; the reeds are five scents of their own. Bespoke composition is a real SOSA service, discussed on WhatsApp rather than priced on a page - with the cheaper honest answer first, which is that one of the seven held at three written levels for the whole sales period already is a signature, because consistency makes a signature and uniqueness does not.
| Scent | Why it suits the mood |
|---|---|
| The gallery and the model · arrival level, placed low and inward | The largest connected volume, people moving rather than sitting, entrance doors cycling. 2,000 sq ft at 12 ft is 24,000 cubic feet, about 680 cubic metres. Place away from the entrance airstream and away from an air conditioning supply grille, because the first few feet inside the door are effectively outdoor air. Test at the model, which is the one real dwell point in the room. |
| The sample apartment · far less, and often nothing installed | A stage set of a home, read as a home, so nothing may read as a commercial product. Usually connected to the gallery by an open door during viewings, which makes it part of the same body of air - check that before specifying a second machine. 1,200 sq ft at 10 ft is 12,000 cubic feet, about 340 cubic metres with the doors open; a 120 sq ft bedroom at 10 ft is 1,200 cubic feet, about 34, the moment its door shuts. |
| The negotiation room · the lowest on site, or nothing | 180 sq ft at 10 ft is 1,800 cubic feet, about 51 cubic metres: one twentieth of a Vaayu's published rating, behind a shut door, holding three or four people for the longest continuous sit in the building, used several times a day by the same executive. Small, sealed and long compound rather than add. No claim is made about what any fragrance does to anybody in that room, and none is needed. |
| Back office, stores and the model workshop · nothing at all | Not a lower setting - nothing. These hold the people with the highest exposure in the building and buy nobody anything. The same goes for any store holding printed collateral, fabric samples or finish boards, because those go home with a buyer and should not carry your gallery with them. |
So the buying answer, room by room. For the connected gallery volume, the commercial machine is the SOSA Vaayu at ₹11,999: waterless cold-air nebulising of undiluted oil, so no water, no humidity and no wet residue, which is a plain design preference in a city with two damp stretches rather than one, and never a claim to control humidity or treat a building. Rated for approximately 1000 cubic metres of connected air, SOSA's own copy also stating 2,000 to 3,000 sq ft scented evenly. Bluetooth app and timer, 400ml tank, freestanding or wall and HVAC mount, DC 12V / 1A at 5W so it needs a live socket, CE, RoHS and SGS. The app is most of the value, because it is what lets a setting be written down and kept rather than nudged upward by people who have adapted to it. If the gallery runs on ducted air conditioning, the ducted machines are 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.
For a sample flat that is genuinely a separate body of air - doors shut, viewings by appointment - an ultrasonic is usually the whole purchase: a SOSA Boond at ₹899 or a SOSA Sukoon at ₹1,899, running the water-based Hotel Collection from ₹299, with 100ml refills at ₹999 and 300ml also available. The pack of seven 15ml bottles at ₹1,799 is the sensible way to audition registers in your own rooms rather than from a description, judged on day five rather than the first afternoon. The ₹299 water-based bottle never goes into a Vaayu or an HVAC machine - the two systems are not interchangeable.
For the negotiation room, the honest answer is usually nothing, and if you want something, the SOSA reed diffusers are the right shape of product: no plug, no noise, nothing to switch off and nothing to schedule. They are their own registers rather than Hotel Collection ones - Mountain Breeze ₹849 is the driest, with Morning Freshness ₹749, Garden Bloom ₹799, Evening Calm ₹799 and Fresh Brew ₹849, 130ml from ₹1,249 and lasting about 6 to 10 weeks. A reed is passive and local: it scents the few feet around it, which in 51 cubic metres is a meaningful thing to be aware of rather than an advantage to be assumed.
To go deeper: the case for scenting a gallery at all, with the developer's particular problem set out, is in whether a premium Lucknow developer should have a signature scent in its sales gallery. If your entrance is double height, the placement argument that replaces the instinct to turn output up is in how to scent a double-height sales gallery without simply increasing machine output. And whether new paint, laminate and adhesive odours should be ventilated out before fragrancing a sample flat decides when any of this gets switched on.
What SOSA does not publish, and what this page will therefore not invent: consumption rate, refill frequency, monthly running cost, machine lifespan, minimum order quantity or installation lead time. Send your gallery plan with ceiling heights and the negotiation room's dimensions to WhatsApp at +91 96192 18531 instead. Bulk orders are welcome, and custom label or logo on product is available.
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 boutique means the connected retail floor plus any viewing room that has a door of its own - 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
Most of what is written about commercial scenting assumes you are building something from nothing - a new brand, an empty room, a customer who has never met you. Almost none of it is written for the business I actually get asked about most often in a city like Lucknow: the one that has been there for thirty years, that people already trust, where the founder's son or daughter is now looking at the place and thinking it should feel more like what it is worth.
That business has a completely different problem, and it is worth naming plainly. You are not trying to create an impression. You are trying not to damage one. A customer who has come to you since before you were running the place has a version of your shop in their head, and it is a good version - that is why they keep coming. If they walk in one morning and the room announces that something has changed, you have spent a real asset to buy a compliment. So my advice to legacy businesses is almost embarrassingly conservative: go so low that nobody remarks on it. Not low as a compromise - low as the specification.
The rest is the same as it always is, and it is the least commercial thing I say. Fragrance adds a smell; it has never once removed one. So if the showroom smells of damp in August, or the lobby carries the kitchen, or the new fit-out is still off-gassing, a machine gives you both smells at once and most people find that worse than the original. Source, then ventilation, then cleaning, and only then a quiet character held at the same level every single day - because in a business built on being the same place it has always been, consistency is the entire product.
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 an air-treatment device, an air purifier, a dehumidifier, a humidity-control product or an odour-removal product, and none makes any health, allergy, air-quality or occupational claim. No claim is made here about any effect on a customer, a patient, a purchase, a footfall figure or a business result. Nothing in this guide is clinical, facilities, HVAC, food-safety or building advice: in a clinical space the treating clinician decides what may be in the air, in a food business the kitchen and the applicable food-safety rules decide, and in any building the people responsible for its air and its maintenance decide - and their decision overrides every recommendation here. Descriptions of Lucknow's seasons, localities and crafts are general and qualitative; every figure about a specific building must come from that building. Nothing here claims any association with, or endorsement by, any craft body, heritage authority or local institution. 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.