The reason it deserves its own page is that most owners treat the split as an act of faith. They switch the machine off in the newborn room, leave it on out front, and then quietly worry that it is all one building anyway and the scent is getting in regardless. Either that or they assume the opposite, that a machine rated for 1000 m3 must be filling every room in a studio a fifth that size, and they buy a second machine for the far end of the floor that they did not need. Both of those are the same mistake in different directions: reading a coverage figure as if it described a building rather than a volume of air.
So: what a rating actually assumes, what a shut door actually does, how big the gap under it really is compared with the door itself, where the machine should physically stand, which way your air conditioning is pushing, and how to walk the studio with a nose you can trust. Do all of that once and you will never wonder about it again, because it is not a matter of opinion. It is floor area multiplied by ceiling height, divided by 35.3, with a wall in the middle.
How do I check that it is actually working? Walk it with a fresh nose. Go outside for ten minutes, come back in through reception, then walk to the newborn room, open the door and read the first breath before you step in. Your own nose adapts within minutes of being inside, so the first breath after a real break is the only honest reading you will get. Do it on a morning the building has been shut, and get someone who does not work there to do it too.
What defeats the split in practice? Four things, in order of frequency: a door propped open with a stand or a cable; the machine sitting in the corridor between the two rooms because that is where the free socket is; a ducted air conditioning system with a shared return grille joining rooms that look separate on the plan; and a large undercut where carpet was lifted and never replaced. Check those before you conclude anything about the machine.
Scent moves two ways in a building. It diffuses, which is slow and gets slower as it dilutes, and it is carried by air movement, which is fast and is entirely at the mercy of what your building is doing. A shut door offers almost nothing to either. Diffusion through a narrow gap into a much larger volume on the other side is a losing proposition arithmetically, and there is no bulk air movement through a closed door unless a pressure difference is driving it.
Put numbers on the gap, because this is where intuition fails people. A standard door leaf is roughly 900 mm wide and about 2,000 mm tall, so the opening it fills is about 0.9 x 2.0 = 1.8 square metres. Now the undercut. A 10 mm gap under that same 900 mm door is 0.9 x 0.01 = 0.009 square metres. That is one two-hundredth of the doorway - 1.8 divided by 0.009 is 200. Even a generous 20 mm undercut is 0.018 square metres, one hundredth. So when somebody props that door open for convenience, they have not slightly weakened the boundary. They have multiplied the opening by a hundred or two hundred times and removed it entirely. The boundary is binary in practice: shut, and it holds; open, and there is no boundary at all and you have one room with a wall sticking into it.
Now the volumes, by hand. Take a common newborn studio layout. The shooting room is 200 sq ft at a 10 ft ceiling: 200 x 10 = 2,000 cu ft, and 2,000 / 35.3 is about 57 m3. Reception and waiting is 300 sq ft at 12 ft: 300 x 12 = 3,600 cu ft, which is 3,600 / 35.3, about 102 m3. The corridor joining them is 80 sq ft at 10 ft: 800 cu ft, about 23 m3. If everything were open, you would have 2,000 + 3,600 + 800 = 6,400 cu ft, which is 6,400 / 35.3, about 181 m3, comfortably inside one Vaayu's rating with a great deal to spare - which is exactly why owners assume the newborn room must be getting scented. It is not, because the door is shut. What you actually have is a 102 m3 volume you are scenting, a 23 m3 corridor next to it, and a 57 m3 volume you are not.
That is the entire mechanism, and it is why an ultrasonic like the SOSA Sukoon at ₹1,899 running the water-based Hotel Collection from ₹299 is usually the right machine for that 102 m3 reception rather than anything larger. You are not trying to reach anything. You are filling one room, lightly, and stopping at a wall. A portion of every SOSA order supports girl-child education through Nanhi Kali.
The corridor mistake is worth its own sentence because it is the one almost everybody makes, and always for the same reason: the corridor has the spare socket. A corridor is by definition the volume that touches everything. Scenting it is the least targeted thing you can do in a building, and in a newborn studio it means you have put your machine in the one place that shares a boundary with the room you have decided to keep neutral.
The second most common is thinking about this as a strength problem. Owners ask whether a smaller machine would be safer, as though the risk were the machine's power reaching too far. It is not. A closed door is not defeated by a stronger machine and it is not made safer by a weaker one. What defeats a closed door is the door being open, or air being actively pumped from one room to the other by a ducted system. Size the machine for the room you are filling, and manage the boundary separately.
And the rule that never bends, in any phrasing: you do not reduce ventilation, close vents or turn off extraction anywhere in the studio so the reception holds its scent longer. If a well-ventilated reception is hard to scent, that is a good problem with two honest answers - accept a lighter result, or improve the placement. Never the third one.
Two volumes and one boundary - the mechanism, worked through
Three things to work through, and they run in order of how often they go wrong. First, the volumes and what the rating means, because that is the conceptual part and it takes ten minutes with a tape measure and a calculator. Second, placement and airflow, which is where a correct understanding still produces a bad result, because the machine ends up in the wrong room or the air conditioning is quietly moving air in a direction nobody checked. Third, verification, because the only opinion in the building that is worthless on this subject is yours - your nose adapted to your own studio within minutes of arriving this morning.
Before any of that, a word about why the newborn case is the one worth building the mechanism page around. Every studio has rooms it wants to treat differently, but in most of them the consequence of leakage is mild: a makeup corner smells faintly of the reception, and nobody minds. Here the entire point is a room that is genuinely neutral, and "genuinely" is doing real work. A room that is nearly unscented is not what you told the parents on the phone. So this is the case where you want to understand the boundary rather than assume it, and where a four-minute check every few months is worth building into the routine.
The good news is that the physics is on your side and it is not marginal. A shut door is a very effective boundary, an undercut is a very small opening, and the volumes involved dilute a trace to nothing quickly. Studios that get this wrong almost never get it wrong by a little. They get it wrong because a door was propped, because a machine was in a corridor, or because a ducted system was actively connecting two rooms that a floor plan showed as separate. Those are three findable things, and once found they stay fixed.
One more thing worth knowing, because it is a small piece of luck. A newborn room is usually kept warmer than the corridor outside it, and warmer air in a closed room tends to sit at slightly higher pressure than the cooler space next to it, so what little air moves under that door tends to move outwards rather than inwards. That is not something to rely on, and it is not a substitute for shutting the door. But it does mean the ordinary way a newborn studio is run - warm room, shut door, cooler corridor - is already working with you rather than against you.
Work a real layout. The newborn shooting room is 200 sq ft at 10 ft: 200 x 10 = 2,000 cu ft, and 2,000 / 35.3 is about 57 m3. Reception and waiting is 300 sq ft at 12 ft: 300 x 12 = 3,600 cu ft, about 102 m3. The corridor is 80 sq ft at 10 ft: 80 x 10 = 800 cu ft, about 23 m3. A separate viewing room, if you have one, at 180 sq ft and 12 ft, is 2,160 cu ft, about 61 m3. Add the reception and corridor together and you get 4,400 cu ft, about 125 m3, which is the connected volume you are actually scenting if the corridor door stays open and the newborn room door stays shut.
Now read the rating properly. The SOSA Vaayu at ₹11,999 is rated for approximately 1000 m3 of connected air, with SOSA's own copy also stating 2,000 to 3,000 sq ft scented evenly. Against a 125 m3 front-of-house that is enormously more machine than the room needs, which is exactly the situation in which owners over-dose without realising: a machine with plenty of headroom on a low setting still delivers more than a small room wants unless you are deliberate about it. This is the commonest reason a newborn studio's reception is too strong. It is not that somebody chose an aggressive setting. It is that they bought for the building and installed in a room.
Which is why, for a 102 m3 reception or a 125 m3 reception-plus-corridor, an ultrasonic is very often the better instrument as well as the cheaper one: the SOSA Sukoon at ₹1,899 running the water-based Hotel Collection from ₹299, or the SOSA Boond at ₹899 for something smaller. The Vaayu earns its place when the front-of-house is genuinely large and open - reception, lounge and viewing running together with no doors, into the several-hundred-cubic-metre range - or when the studio has a second floor or a second site to keep consistent.
Then the sentence that does the work: a rating assumes one connected body of air. Not one building, not one floor, not one address. If your plan has four rooms and two of the doors stay shut, you do not have a 181 m3 studio. You have a 125 m3 volume, a 57 m3 volume and a machine standing in one of them. Nothing about a coverage number promises to cross a wall, and nothing about a larger number makes it more likely to.
One practical consequence worth naming. If you ever open the newborn room's door to air it between bookings - which you should, because airing between sessions is the correct way to keep that room honest - you have temporarily joined the two volumes. That is fine, and it is short, and the room will exchange with the corridor and reception for a few minutes. Do the airing with an external window or the studio's front door open as well, so the room is exchanging with outside air rather than only with your scented reception, and shut it again before the next family arrives.
Put the machine inside reception, not in the corridor. This is the single most common physical error and it happens for a mundane reason: the corridor has a free socket and reception's sockets are all behind the desk or under the sofa. A corridor is the volume that touches every other volume, including the one you have decided to keep neutral. Standing your machine there is the least targeted possible choice. Find a socket inside reception, use an extension run tidily along a skirting, or wall-mount. The SOSA Vaayu runs on DC 12V / 1A at 5W and is mains powered, so it needs a live socket wherever it goes, and it mounts freestanding, on a wall or into HVAC - which means you have more placement options than a machine that has to sit on a table.
Put it on the far side of reception from the connecting door. Within the room, distance is free. If the door to the newborn room or its corridor is on the east wall, the machine goes on the west. This does nothing dramatic, because the room mixes anyway, but it means the highest local concentration - the air immediately around the machine - is as far as possible from the boundary you care about, and it means nobody is ever standing in the doorway with the machine at their elbow.
Check which way the air conditioning is pushing. A split unit stirs one room and joins nothing, which is helpful. A ducted system is a different matter entirely: it can join rooms that look separate on a plan, and it can move air from one to another all day whether you like it or not. Two questions answer this. Is there a supply vent in both rooms fed from the same unit? Is there a shared return path - a common return grille, or a plenum ceiling both rooms open into above the partition? If the answer to either is yes, the door is not the only boundary and you need to deal with the duct: a separate zone, a closed damper to the newborn room's supply while it is in use if the system allows it without harming the room's air exchange, or simply not scenting the front-of-house from a machine tied into that system at all. What you never do is reduce the newborn room's air exchange to control scent. That trades a small problem for a real one.
Mind the gap under the door, but keep it in proportion. A 900 mm door with a 10 mm undercut is 0.009 square metres of opening, against 1.8 square metres if the door is open - a factor of two hundred. So the undercut is not the problem in a normal studio. It becomes worth attention only in two cases: a very large undercut left behind when carpet was lifted, where 25 or 30 mm starts to be a real slot; and a situation where a pressure difference is actively driving air through it, which is what happens if the newborn room has an extract fan running with the door shut and no other make-up air path, because then the room is pulling air in from the corridor continuously. If you have an extract in there, it should be running when the room is empty and being aired rather than during a session.
Watch the doors that get propped. Every studio props a door: with a light stand, a sandbag, a cable, a wedge someone brought in. Walk the plan and look specifically for the connecting door, and then make it hard to prop - a self-closer, a hook that holds it shut, or simply the habit of the person who opens the studio checking it. On a printed floor plan, mark that door as the boundary and write KEEPS SHUT on it, next to the NO FRAGRANCE on the room itself.
And the standing prohibition, because it belongs in this section more than anywhere: never reduce ventilation, close a vent or switch off extraction to make the reception hold its scent longer. A well-ventilated studio is genuinely harder to scent. That is a good problem, and the answers to it are placement, a sensible expectation and a machine sized to the room - never less air.
So here is the check, and it takes four minutes. Go outside for ten minutes. Properly outside, into different air, and do not go and stand next to the door. Then come back in through the front door and stop in reception without walking around. Read the first breath and write down, in plain words, what you get: "faint tea", "nothing", "quite strong", "coffee and something". First breath only - the second one is already compromised. Then walk to the newborn room, open the door and read the first breath from the doorway before stepping in. Again, plain words. The answer you want is "nothing" or a description of the room itself - warm, clean, fabric. The answer that tells you the boundary has failed is your reception register turning up in that doorway.
Do it on a morning the building has been shut, because that is the coldest and most honest reading you will get all week and it is also close to what your first client of the day experiences. And do the same walk in the other order occasionally, coming from the newborn room out to reception, because the contrast at a boundary is easier to read in one direction than the other depending on the levels involved.
Then get a nose that is not yours. Ask two or three people who do not work in the building - a delivery driver you know, a friend, a client you have a relationship with - to tell you what they notice when they come in, and ask them before you mention that there is a diffuser. If nobody mentions it and nobody is bothered, the reception is about right. If two of three name a product, the level is high. If anybody mentions smelling something in the newborn room, you have a boundary failure and you look for the four causes: propped door, machine in the corridor, shared duct or return, oversized undercut.
Build it into a schedule rather than doing it when something feels off. Quarterly is plenty for a stable building. Do it additionally after any change to the fabric: a new air conditioning unit, a duct alteration, carpet lifted or laid, a door replaced or rehung, a partition moved, a machine relocated or a different machine bought. Those are the moments when a boundary that had held for two years quietly stops holding, and nobody notices because everybody inside has adapted.
Two more people to listen to. Your team, who are in that air eight to ten hours a day, five or six days a week - the newborn photographer in particular is in a small closed room for three hours at a time, repeatedly, and is the most exposed person in this entire bank. Any comment from any of them, even a passing one, means the level comes down before there is a discussion, and it is never treated as a tolerance problem. And the parents, at the end of a session, in the ordinary way: "was everything comfortable in there?" is a normal question and it will get you an honest answer more reliably than any instrument you could buy.
One thing not to do: do not verify by turning the machine up until you can smell it and then turning it back down. That is a method built entirely on an adapted nose, and it is how reception levels drift upwards over a year - every adjustment made by the one person in the building who can least detect the result.
- Measure both rooms and work out cubic metres by hand: area x height, divided by 35.3.
- Stand the machine inside reception, far from the connecting door - never the corridor.
- Check for a shared duct or return grille, and mark the connecting door KEEPS SHUT.
- Verify quarterly: ten minutes outside, then read the first breath in each room.
What reception runs, and how to check the room stayed clean
With the mechanism settled, what does reception actually run? The register question is the easy end of this page, but there are two decisions inside it that are specific to a newborn studio and worth making deliberately.
The first is level, and it is lower here than in almost any other reception in this bank. Count who is in that room and for how long. Parents spend a large part of a two to four hour session in it. Grandparents, who come along more often in newborn work than anywhere else, spend all of it. Then the viewing appointment afterwards is another two or three hours in the same chairs. This is a reception by architecture and a lounge by use, and when a room is both, you dose it as the lounge. Set it low enough that a visitor registers the room as pleasant on arrival and has stopped noticing it by the time the tea arrives.
The second is more specific: your reception is the volume immediately next to a room you have promised is neutral, so its level is not only about comfort in reception. It is also your margin. A reception running low gives you a boundary that holds comfortably even on the day somebody leaves the door ajar for two minutes while carrying a car seat through. A reception running hard gives you a boundary that is doing all the work with none to spare. Under-dosing the front-of-house is therefore worth something concrete here that it is not worth in a fashion studio, and it is a good argument for the smaller machine rather than the bigger one.
On register, there are seven in the water-based Hotel Collection, each SOSA's own hotel-inspired interpretation, and SOSA is independent and not affiliated with, endorsed by or connected to any hotel brand. Quiet Luxury is white tea, bergamot and cedar, with the character of a hushed, polished lobby - the default, and the one least likely to be wrong. White Tea Serenity is white tea, aloe and cedar, clean and weightless, which agrees with the pale, soft interiors newborn studios almost always have. Warm Welcome is citrus, floral and sandalwood, warm and gracious, for a studio positioned around family. Tea Garden is jasmine, green tea and white tea, with the jasmine sitting inside tea rather than on top of it. Forest Suite is cedarwood, vetiver and green leaves for a greener, more architectural shell. Old-World Glamour, amber, violet and woods, and Lobby Bar, citrus, pepper and amber, are both louder than this room wants.
There is a placement point that follows from the register choice too, and it is worth twenty seconds of thought: whatever you run, run one of it. A newborn studio with a different register in the reception and in the viewing room, when the two are on the same client route, produces a seam that people feel at the doorway without being able to name. One register at different levels across the front-of-house reads as a building with a personality. Two registers reads as a building that has not decided.
Two refusals, as everywhere in this section. This page will not rank the seven on throw or longevity, because SOSA publishes no comparative figures and the real determinants are connected volume, ceiling height, ventilation rate, soft material and setting - all of which you now know how to measure. And it will not suggest that any register is more or less suitable around an infant, because that would be a health claim, SOSA does not publish one in either direction, and the newborn room is unscented regardless.
Finally, the override that sits above the whole mechanism. All of this describes what a studio does by default. A parent's own preference outranks it: if a family would rather the reception were unscented too while they are in the building, it goes off before they arrive and nobody makes a project of it. That is a thirty-second job if the control is on a shared phone and anybody is allowed to use it, and a five-minute embarrassment if it is not.
| Scent | Why it suits the mood |
|---|---|
| Reception and waiting · roughly 100 to 125 m3 | One register, held at the lowest level in the building, with the machine inside the room and on the far side from the connecting door. A 300 sq ft room at 12 ft is 3,600 cu ft, about 102 m3 - a Sukoon at ₹1,899 with Hotel Collection from ₹299 is usually the right instrument, not something larger. |
| The corridor · roughly 23 m3 | Nothing, deliberately. A corridor touches every other volume including the one you are keeping neutral, so it is the worst place in the building to stand a machine and it gets one only because that is where the free socket is. Run an extension into reception instead, or wall-mount. |
| The newborn room · roughly 57 m3 | Nothing at all, and no bottles stored inside. A 200 sq ft room at 10 ft is 2,000 cu ft, about 57 m3 - small, shut, warm and still, with a session running two to four hours. Mark the room NO FRAGRANCE and the connecting door KEEPS SHUT on a printed plan. |
| The boundary itself · the door, and the duct | A shut 900 mm door leaves about 0.009 square metres of undercut against 1.8 square metres propped open. The door is not usually the leak - the leaks are a propped door, a machine in the corridor, a shared return grille in a ducted system, or an oversized undercut where carpet was lifted. |
What to buy, sized to the arithmetic rather than to the address. For a 100 to 125 m3 front-of-house, an ultrasonic is both cheaper and better matched: the SOSA Boond at ₹899 for a small front desk area, the SOSA Sukoon at ₹1,899 for a normal reception and waiting room, or the SOSA Megh at ₹3,499 with its 6 litre tank if the same room runs viewings all day and nobody wants to top it up mid-appointment. All three run the water-based Hotel Collection from ₹299, with 100ml refills at ₹999 and a pack of seven 15ml bottles at ₹1,799 for trying registers in your own room.
The SOSA Vaayu at ₹11,999 belongs here when the connected front-of-house is genuinely large - reception, lounge and viewing joined with no doors, running into the several hundred cubic metres - or when you are keeping two floors or two sites consistent. It is waterless cold-air nebulising of undiluted oil, so no water, no humidity and no wet residue, which is why it is the machine that belongs in a building with camera bodies and wardrobe in it. Rated for approximately 1000 m3 of connected air, with SOSA's own copy also stating 2,000 to 3,000 sq ft scented evenly. 400ml tank, freestanding or wall or HVAC mount, DC 12V / 1A at 5W and mains powered so it needs a live socket, CE, RoHS and SGS. For this page the mounting options matter as much as the rating: being able to wall-mount is often what lets you get the machine out of the corridor and into reception where it belongs.
If you are considering an HVAC route, this is exactly the point at which to slow down. Aangan at ₹25,999 covers approximately 8,000 to 10,000 sq ft and Meenar at ₹38,500 approximately 12,000 to 18,000 sq ft, both ducted - and a ducted machine distributes to wherever the duct goes. In a newborn studio that is precisely the mechanism you have spent this whole page not wanting, unless the system is zoned so that the newborn room is genuinely off the scented branch. If it is not zoned, an HVAC machine is the wrong answer for this building regardless of its size rating, and a ₹1,899 ultrasonic standing in reception is the right one. Two systems, and they are not interchangeable: the ultrasonics are water-based cool-mist machines that add moisture to the air, the Vaayu and the ducted machines run waterless nebulising oil, and the ₹299 water-based bottle never goes into a Vaayu or an HVAC machine.
Ordinary prudence, stated as prudence rather than as a claim: keep any machine away from open equipment cases and from the spot where lenses get changed, and do not point a mist machine at anything you care about. SOSA publishes no claim that any product protects or damages photographic equipment, and this page makes none. SOSA reed diffusers from ₹749 are a good fit for a reception corner - Morning Freshness at ₹749, Garden Bloom at ₹799, Evening Calm at ₹799, Mountain Breeze at ₹849 and Fresh Brew at ₹849, 130ml from ₹1,249 and lasting about 6 to 10 weeks - with the standing rule that they live in reception and are never carried into or stored in the shooting room.
For the reasoning behind the unscented room rather than the mechanism that makes it possible, read should a newborn photography studio remain fragrance-free. If you also shoot maternity, the same split applies with slightly different reasoning in should a maternity photography studio use fragrance at all. And the day-to-day operating version - the booking question, the defaults, the off switch and the team - is how fragrance should be handled in a studio serving pregnant clients.
The usual limits apply and this page will not step over them. SOSA does not publish a consumption rate, a refill frequency, a monthly running cost or a machine lifespan, because every one of those depends on run hours, connected volume and setting, which belong to your building rather than to SOSA. If you want that worked through against the volumes you have just measured, WhatsApp SOSA at +91 96192 18531. Bulk orders are welcome, custom label or logo on product is available, and bespoke composition made only for your studio is a real SOSA service discussed there rather than priced on a page.
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 - 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 photography studio sells a feeling before it sells a photograph. A couple sitting on your sofa choosing an album is doing something emotional, and they are doing it in your air for three or four hours. That is a long time to be in a room, and it is the reason I keep telling studio owners to go lower than they think.
The mistake I see is scenting the whole studio at one level. A reception is a thirty-second room and can carry a little presence. A consultation lounge is a three-hour room and needs a whisper. A newborn or maternity room should usually have nothing at all, and I would rather say that plainly than sell a second machine.
And the unglamorous part first: fragrance adds scent, it does not remove odour. If the studio smells of hairspray, of last night's crew dinner or of a room that has been shut since Sunday, scent laid on top makes a third smell. Find the source, air the room, clean it - and then, when the air is honest, give it a signature.
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. 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.