★ SOSA Vaayu · multi-floor villas
A staircase is a chimney, not a corridor. Fragrance that goes up it arrives late, thin, and at the ceiling
★ ★ ★ ★ ★
★★★★★
"I had one machine at the bottom of the stairs and could not work out why the first floor smelled of nothing. It was going up the stairwell, not across the villa."
Four-bedroom villa, two floors
★★★★★
"Housekeeping closes the bedroom doors after every turnover. Nobody told me that a closed door is a wall for fragrance. Obvious once you read it."
Villa host · turnover routine
★★★★★
"Working out the cubic volume floor by floor changed what I bought. Two of my three floors did not need a machine at all."
Three-floor villa · planning
★★★★★
"The top floor lounge was always stronger than the ground floor even though the source was downstairs. Warm air rising, apparently."
Duplex listing · placement
★★★★★
"Put the machine on the common floor and reeds on the landings. Guests walk through the landings; nobody stands in them."
Vaayu + reeds on landings
★★★★★
"I stopped trying to make one source do the whole house. Cheaper and quieter to admit each floor is separate."
Villa owner · multi-floor plan
★★★★★
"I had one machine at the bottom of the stairs and could not work out why the first floor smelled of nothing. It was going up the stairwell, not across the villa."
Four-bedroom villa, two floors
★★★★★
"Housekeeping closes the bedroom doors after every turnover. Nobody told me that a closed door is a wall for fragrance. Obvious once you read it."
Villa host · turnover routine
★★★★★
"Working out the cubic volume floor by floor changed what I bought. Two of my three floors did not need a machine at all."
Three-floor villa · planning
★★★★★
"The top floor lounge was always stronger than the ground floor even though the source was downstairs. Warm air rising, apparently."
Duplex listing · placement
★★★★★
"Put the machine on the common floor and reeds on the landings. Guests walk through the landings; nobody stands in them."
Vaayu + reeds on landings
★★★★★
"I stopped trying to make one source do the whole house. Cheaper and quieter to admit each floor is separate."
Villa owner · multi-floor plan
✓ Vaayu: waterless cold-air nebulisation · up to 1000m³ · 400ml tank, 90+ days a fill · under 38 dB ✓ Ships with four 100ml cold-air fragrances — SOSA does not currently sell a separate Vaayu refill ✓ Sukoon ₹1,899 covers 270–320 sq ft · reed diffusers from ₹749 · free shipping above ₹499
Founder Diaries · Large-Space Scenting · Multi-Floor Villas
The rule: a closed door is a wall. Count the doors housekeeping closes between guests, and you have counted the spaces that will receive nothing at all.
The plan that works: one machine on the floor guests actually occupy — entry, living, dining — and small passive sources on the landings and in the bedrooms. Not one heroic source at the bottom of the stairs.
The honest note: the Vaayu covers up to 1000m³ of connected volume. Floor slabs and shut doors mean a villa is rarely one connected volume, whatever the total adds up to.
Evening Calm₹799 · bedroomsEvery coverage figure published for every scent machine, ours included, describes connected air. The moment a door is shut, the space behind it is a separate volume that receives essentially nothing. This matters more in a rented villa than in a home, because the turnover routine almost always ends with the bedroom doors closed — it keeps the rooms presentable, it keeps the air-conditioning in, and it is what housekeeping has always done. So the guest arrives to a beautifully scented common floor and opens a bedroom door onto air that has been sealed since the last clean. The fix is not a stronger machine downstairs. It is a small, passive, permanent source inside each bedroom: a 50ml reed diffuser at ₹749–₹849, six fibre reeds, flipped weekly, which works with the door shut and needs no power point.
Vaayu · the common floor₹11,999Shop → 
Sukoon · an upper lounge₹1,899Shop → 
Reeds · bedrooms and landingsfrom ₹749Shop →
SOSA Vaayu specifications (verified from the live product page, August 2026): ₹11,999 (the product page displays a rounded ₹12,000). Waterless cold-air nebulisation — pressurised air atomises undiluted fragrance oil into a dry nano-mist; no water, no heat, residue-free. Coverage up to 1000m³, about 2,000–3,000 sq ft. 400ml refillable tank, 90+ days per fill at a mid intensity setting. Bluetooth app plus onboard buttons, 1h / 4h / 8h / 24h timers, adjustable mist intensity, auto-stop and key-lock. Under 38 dB. DC 12V / 1A, 5W. 165 × 80.5 × 215 mm, 0.9 kg, black or white. Freestanding or wall / HVAC mount. CE, RoHS and SGS certified. Ships with four SOSA Hotel Collection fragrances at 100ml each (400ml in total) in one of three combos chosen at checkout. SOSA does not currently sell a separate Vaayu refill oil; the 400ml supplied in the box is the fragrance available at the time of writing, and buyers who need long-term supply should confirm current refill availability with SOSA before purchasing. The cold-air oil supplied with the Vaayu is a different product from the water-based Hotel Collection sold for ultrasonic machines (15ml ₹299 · 100ml ₹999 · 300ml ₹1,799), which must not be used in a Vaayu despite sharing scent names. Other SOSA machines: Boond 300ml ₹899 (~150 sq ft) · Sukoon 500ml ₹1,899 (270–320 sq ft) · Megh 6L ₹3,499 (~215 sq ft — a runtime and humidity machine, not a coverage upgrade) · Aangan ₹25,999 (~8,000–10,000 sq ft) · Meenar ₹38,500 (12,000–18,000 sq ft) · Safar car diffuser ₹3,999. Reed diffusers 50ml ₹749–₹849 (6–8 weeks) · 130ml ₹1,249–₹1,349 (14–18 weeks) · duo sets ₹1,498–₹1,598 · oil-only refills 300ml ₹2,399 / 500ml ₹3,499. Runtime, consumption and coverage figures are manufacturer specifications and vary with intensity setting, run hours, ceiling height, ventilation and season; any per-month or per-day figure in this guide is arithmetic on those specifications, not a measurement. Electricity costs vary by state tariff. No claim is made that scenting affects ratings, reviews, bookings, occupancy, revenue, health, mood or air quality. Free shipping above ₹499. A portion of every order supports girl-child education through Nanhi Kali. Prices subject to change — see the live product pages.
Hosts with a two- or three-floor villa almost always buy in the wrong order. They put one source on the ground floor, walk upstairs, smell nothing, and conclude the machine is underpowered. It usually is not. A staircase does not distribute fragrance across a house — it moves air vertically, at its own pace, in a direction set by temperature rather than by your floor plan. Scent that goes up a stairwell arrives on the floor above late, thinner than it left, and collected near the landing ceiling where no guest is standing. Every floor in a villa is a separate scenting problem, and the money goes further once you plan it that way.
Quick answers — read this first
The mechanism: a stairwell behaves like a chimney. Warm air rises through it and takes fragrance with it, so a ground-floor source loses part of its output upward before it has crossed the ground floor.The rule: a closed door is a wall. Count the doors housekeeping closes between guests, and you have counted the spaces that will receive nothing at all.
The plan that works: one machine on the floor guests actually occupy — entry, living, dining — and small passive sources on the landings and in the bedrooms. Not one heroic source at the bottom of the stairs.
The honest note: the Vaayu covers up to 1000m³ of connected volume. Floor slabs and shut doors mean a villa is rarely one connected volume, whatever the total adds up to.
The short answer
Short answer: scent a multi-floor villa floor by floor. Put your one powered source on the common floor — the one with the entrance, the living and dining space and the most guest hours — and treat every floor above it as a separate, smaller problem solved with its own source. Do not place a machine at the foot of the stairs and expect the staircase to deliver it upstairs; the staircase is a chimney, and what it carries upward arrives diluted and high.
The mechanism: air moves vertically through a stairwell whenever there is a temperature difference between floors, which in an Indian villa is almost always. Warm air rises and takes fragrance with it, so the ground floor under-scents and the top floor collects at the ceiling. Reverse the temperature — top floor air-conditioned, ground floor open — and the flow reverses with it. Neither state distributes evenly, which is why the stairwell is a poor delivery system and a good placement opportunity for something passive.
Shop: the SOSA Vaayu at ₹11,999 is a waterless cold-air machine covering up to 1000m³, with 1h / 4h / 8h / 24h timers, a key-lock and a 400ml tank. For a single upper-floor lounge, the Sukoon at ₹1,899 covers 270–320 sq ft. For bedrooms and landings, reed diffusers from ₹749. Free shipping above ₹499.
In this guide
For the common floor
SOSA Vaayu · ₹11,999
For one upper-floor room
Sukoon · ₹1,899
For landings and bedrooms
Reed diffusers · from ₹749
Straight answer
How do you fragrance a villa that has more than one floor?
1. Stop treating the villa as one space. Work out the floor area of each floor separately and multiply by its ceiling height. A 900 sq ft floor at 10 ft is 9,000 cubic feet, which is about 255m³. Three such floors total roughly 765m³ — comfortably inside the Vaayu's 1000m³ figure on paper, and still three problems in practice, because floor slabs and closed doors mean those volumes are not connected.
2. Put the powered source on the floor with the guest hours. In almost every villa that is the entrance, living, dining and kitchen level. It is where arrival happens, where people sit, and where the connected open volume is largest.
3. Treat the stairwell as a passage, not a duct. A reed diffuser on a landing scents the person walking through it, which is exactly what a landing is for. It will not scent the floor above.
4. Give each bedroom its own small source. Housekeeping closes those doors between guests, and a closed door is a wall. A 50ml reed diffuser at ₹749–₹849 per bedroom is the honest answer, not a bigger machine downstairs.
5. Schedule rather than run continuously. The Vaayu's 1h / 4h / 8h / 24h timers and key-lock exist for exactly this — a property you are not standing in, where a guest should not be able to change the setting.
6. Know the supply position before you commit. The Vaayu ships with four 100ml cold-air fragrances, 400ml in total, rated at 90+ days per fill. SOSA does not currently sell a separate Vaayu refill oil. If long-term supply matters to you, ask SOSA what is available before you buy.
7. No promises about outcomes. A well-scented arrival is a real thing a guest experiences. Nobody — including me — can promise it changes a rating, a review or a booking, and this page does not claim it.
The Vaayu is made in India; our reed diffuser fragrances are composed and handmade in small batches in Pune, and a portion of every order supports girl-child education through Nanhi Kali.
2. Put the powered source on the floor with the guest hours. In almost every villa that is the entrance, living, dining and kitchen level. It is where arrival happens, where people sit, and where the connected open volume is largest.
3. Treat the stairwell as a passage, not a duct. A reed diffuser on a landing scents the person walking through it, which is exactly what a landing is for. It will not scent the floor above.
4. Give each bedroom its own small source. Housekeeping closes those doors between guests, and a closed door is a wall. A 50ml reed diffuser at ₹749–₹849 per bedroom is the honest answer, not a bigger machine downstairs.
5. Schedule rather than run continuously. The Vaayu's 1h / 4h / 8h / 24h timers and key-lock exist for exactly this — a property you are not standing in, where a guest should not be able to change the setting.
6. Know the supply position before you commit. The Vaayu ships with four 100ml cold-air fragrances, 400ml in total, rated at 90+ days per fill. SOSA does not currently sell a separate Vaayu refill oil. If long-term supply matters to you, ask SOSA what is available before you buy.
7. No promises about outcomes. A well-scented arrival is a real thing a guest experiences. Nobody — including me — can promise it changes a rating, a review or a booking, and this page does not claim it.
The Vaayu is made in India; our reed diffuser fragrances are composed and handmade in small batches in Pune, and a portion of every order supports girl-child education through Nanhi Kali.
TL;DR: a stairwell is a chimney. One machine on the common floor, reeds on the landings, one small source per bedroom. Measure each floor as its own cubic volume, count the doors that get closed, and buy per floor rather than buying one heroic source and hoping. Vaayu ₹11,999, Sukoon ₹1,899, reeds from ₹749.
The common-floor machine
SOSA Vaayu · waterless cold-air nebuliser ₹11,999
Pressurised air atomises undiluted fragrance oil into a dry nano-mist — no water, no heat, no damp patch on a villa wall in a coastal monsoon. Coverage is quoted up to 1000m³, roughly 2,000 to 3,000 sq ft depending on ceiling height, which is a volume figure and not a floor-plan one. 400ml refillable tank, 90+ days per fill, Bluetooth app and onboard buttons, 1h / 4h / 8h / 24h timers, adjustable intensity, auto-stop and a key-lock so a guest cannot change your setting. Under 38 dB, 5W, 0.9 kg, freestanding or wall mounted. Four 100ml cold-air fragrances in the box.
Part one — why fragrance does not climb stairs the way you expect
The assumption underneath most failed villa scenting is that a house is a single container and that fragrance released anywhere in it will eventually reach everywhere. In a single-storey flat that is roughly true, because the air is one connected body being stirred by people walking through it. Add a staircase and you have added a vertical duct with its own weather. Air in a stairwell is almost never still: any temperature difference between the bottom and the top of the house sets it moving, and in an Indian villa there is always a temperature difference — a hot terrace, a cooled bedroom floor, a kitchen at the base, an evening that cools the ground floor faster than the roof slab. What that means for fragrance is not that it fails to travel, but that it travels in a direction you did not choose, at a speed you cannot set, and arrives somewhere nobody is standing.
1
MECHANISM ONE
The stairwell is a chimney, and it is always drawing
Warm air is less dense and it rises; cooler air falls to replace it. In a multi-floor house that exchange happens through the one opening that connects the floors, which is the stairwell. The practical consequence for a host is uncomfortable: a source placed near the foot of the stairs loses a share of everything it produces up the shaft before it has finished crossing the ground floor. You have paid for output that is now sitting against a landing ceiling on the first floor. Reverse the temperatures — air-condition the bedroom floor and leave the ground floor open on a warm evening — and the draw reverses, pulling scented air downward and out through the front door. Neither condition is a fault in the machine. It is simply what a vertical opening does with air.
The tell: stronger on the landing than in the room the source is standing in. That is the chimney, and moving the source two metres away from the stair opening usually fixes it.
2
MECHANISM TWO
A closed door is a wall — count the ones housekeeping shuts
Evening Calm₹799 · bedroomsEvery coverage figure published for every scent machine, ours included, describes connected air. The moment a door is shut, the space behind it is a separate volume that receives essentially nothing. This matters more in a rented villa than in a home, because the turnover routine almost always ends with the bedroom doors closed — it keeps the rooms presentable, it keeps the air-conditioning in, and it is what housekeeping has always done. So the guest arrives to a beautifully scented common floor and opens a bedroom door onto air that has been sealed since the last clean. The fix is not a stronger machine downstairs. It is a small, passive, permanent source inside each bedroom: a 50ml reed diffuser at ₹749–₹849, six fibre reeds, flipped weekly, which works with the door shut and needs no power point.
The count: doors first, floors second. Every door your cleaner closes is a room that needs its own source.
3
MECHANISM THREE
Height wastes output where nobody is breathing
Villas have taller rooms than flats, and multi-floor villas usually have a double-height section over the stair or the living room. That height is invisible on a floor plan and expensive in practice: a 400 sq ft living room at 10 ft holds 4,000 cubic feet of air, and the same room at 18 ft holds 7,200 — nearly twice the volume to fill for the same floor area. Warm scented air collects in the upper part of that volume, which is why double-height rooms so often read as empty at head height while the balcony above them smells lovely. A wall-mounted source at roughly two metres, aimed into the space people walk through rather than up into the void, wastes far less. The Vaayu can be wall or HVAC mounted for exactly this reason; whether SOSA offers an installation service is not something I can confirm here, so ask them before you plan around it.
Part two — the floor-by-floor plan, with what each floor actually needs
This is the table I would build for any villa of two or three floors before spending anything. It is deliberately organised by floor rather than by product, because the product question only becomes answerable once each floor has been described honestly. Coverage figures are manufacturer specifications for connected air and vary with ceiling height, ventilation and season.
The multi-floor plan
Each floor as its own problem, and the honest kit for it
| Floor or zone | What the air does there | Guest hours | The honest kit | Indicative spend |
|---|---|---|---|---|
| Common floor — entry, living, dining, kitchen ★ | Largest connected volume; loses part of its output up the stairwell | Highest — arrival and every evening | One Vaayu, placed away from the stair opening | ₹11,999 |
| Stairwell and landings | Vertical flow, direction set by temperature, never still | Seconds at a time, several times a day | One reed diffuser per landing — scents the passer-by, not the floor above | From ₹749 each |
| Bedroom floor, doors closed | Sealed volumes that receive nothing from below | Eight hours a night, door shut | A 50ml reed diffuser inside each room — Evening Calm or Mountain Breeze | ₹799–₹849 per room |
| Upper lounge or family room | Its own connected volume, usually 250–400 sq ft | Evenings, and rainy afternoons | A Sukoon at 270–320 sq ft, on its 2H or 4H timer | ₹1,899 |
| Terrace, verandah, open deck | Effectively outdoors — air exchange defeats any format | Variable | Nothing. Do not spend here | ₹0 |
| Guest bathrooms | Extractor-governed; scenting happens between uses | Short and frequent | Morning Freshness 50ml, placed away from the extractor | ₹749 each |
| The honest caveat: the Vaayu ships with 400ml of cold-air fragrance and is rated at 90+ days per fill, and SOSA does not currently sell a separate Vaayu refill oil. The water-based Hotel Collection is for ultrasonic machines and must not be used in a Vaayu, despite sharing scent names. If continuous long-term supply across a season is the point of the purchase, confirm current refill availability with SOSA before ordering. | ||||
Shop this guide
The three sources a multi-floor villa actually uses
Vaayu · the common floor₹11,999Shop → Sukoon · an upper lounge₹1,899Shop → Reeds · bedrooms and landingsfrom ₹749Shop →
The SOSA principle
A staircase is a passage for people and a chimney for air. It is not a distribution system.
Which is why the right question in a villa is never "how big a machine do I need" but "how many separate volumes am I actually scenting" — and the answer is usually more than one and fewer than you feared.
Part three — when a multi-floor villa does not need a machine at all
I would rather lose a ₹11,999 sale than sell a machine into a house that cannot use it, so here is the counter-case in full. If your villa's common floor is under about 800 sq ft of connected space at an ordinary ceiling height, you are not in cold-air territory. Two well-placed reed diffusers — one at the entrance and one at the far end of the living-dining — will cover it, at somewhere between ₹1,498 and ₹1,698 for a pair of 50ml bottles or ₹2,498–₹2,598 for a 130ml duo that runs 14 to 18 weeks. A duplex with a small ground floor and three bedrooms above it is a reed and Sukoon property, not a Vaayu property, and the money is better spent on the mattress.
The second counter-case is the one hosts resist most. If the problem you are solving is one room — a living room that always smells faintly of last night's cooking, or a bedroom that has picked up damp — then ventilation comes first and fragrance second, in that order, always. Nothing in the SOSA range cleans air, removes an odour or changes how anyone feels; a scent machine adds fragrance to air, and it does that best to air that is already clean. Extractor on, windows open for ten minutes, close up, and only then let a source establish. A machine bought to cover a smell will merely produce a third smell nobody designed, and it will do it at ₹11,999.
The third case is supply, and it is specific to this product at this moment. The Vaayu arrives with 400ml of cold-air fragrance across four 100ml bottles, and the specification is 90+ days per fill. Divide it as arithmetic on those two numbers and you get roughly 4.4ml a day at the manufacturer's stated conditions — a figure that moves with intensity setting and run hours, and one I am quoting as arithmetic rather than as a measurement. What I cannot do is tell you where the next 400ml comes from, because SOSA does not currently sell a separate Vaayu refill oil. The water-based Hotel Collection at ₹299 to ₹1,799 is a different product for ultrasonic machines and does not go in a Vaayu, whatever the scent names suggest. If you host year-round and cannot tolerate a gap, ask SOSA about refill availability before you order rather than after.
Count the volumes, not the square feet. A villa is not one room with stairs in it.
— Sonal Sahani, SOSA
Part four — the kit, in the order I would buy it
Assume a three-bedroom villa over two floors with an open common level. This is the sequence I would follow, and the first two steps cost nothing at all.
The multi-floor edit
From free to fixed, in buying order
| Step | What it does for a multi-floor property | What it costs the host | Price |
|---|---|---|---|
| 1. Ventilate on turnover, before anything else ★ | Removes the smell a closed villa develops between guests, which no fragrance covers | Ten minutes of the cleaner's time, windows open | Free |
| 2. Move existing sources off the stair opening | Stops the chimney taking your output to the landing ceiling | Nothing — two metres of repositioning | Free |
| 3. One reed diffuser per bedroom | Solves the closed-door problem the machine cannot reach | A weekly flip during the clean | ₹749–₹849 each |
| 4. One reed diffuser per landing | Scents the passage at the moment a guest walks through it | Same weekly flip | From ₹749 |
| 5. A Sukoon for an upper lounge | 270–320 sq ft on demand, with a remote and 2H / 4H timers | Refilling with water and Hotel Collection oil | ₹1,899 |
| 6. A Vaayu on the common floor | Up to 1000m³ of connected volume, scheduled to the hour and key-locked | A power point, and the refill question answered first | ₹11,999 |
| Not a fix: a Megh for more coverage | ₹3,499 and ~100 hours of runtime, but only about 215 sq ft — less than the ₹1,899 Sukoon | Said plainly: it is a runtime and humidity machine, never a coverage upgrade | ₹3,499 |
Honest notes for buyers: the Vaayu is ₹11,999 (the product page shows a rounded ₹12,000), covers up to 1000m³ of connected air, holds 400ml and is specified at 90+ days per fill at 5W and under 38 dB, with CE, RoHS and SGS certification. SOSA does not currently sell a separate Vaayu refill oil — the 400ml in the box is the supply available today, and hosts who need continuity should confirm the position with SOSA before ordering. The cold-air oil in the box is not the water-based Hotel Collection sold for ultrasonic machines, and the two are not interchangeable in either direction. Reed oil goes in reed bottles only. A Megh at ₹3,499 covers around 215 sq ft, less than the ₹1,899 Sukoon, and is bought for runtime and humidity rather than reach. Warranty length, installation service and spare-part availability are not things I can confirm here — ask SOSA. No claim is made anywhere on this page that scenting affects ratings, reviews, bookings, occupancy, revenue, health or air quality. Stand reed bottles on a tray, keep everything away from children and pets, and ventilate before you scent.
For one upper-floor room
SOSA Sukoon · ultrasonic, 500ml ₹1,899
The sensible second source in a villa, and the one most hosts should try before they consider a machine ten times the price. 270 to 320 sq ft of connected space, 16 to 18 hours on low from one 500ml fill, a remote and steady, 2H and 4H timers, with three 15ml Hotel Collection fragrances in the box. It runs on the water-based Hotel Collection oils at ₹299 for 15ml, ₹999 for 100ml and ₹1,799 for 300ml — which are for ultrasonic machines only and never for a Vaayu or a reed bottle. In a humid coastal villa remember that any ultrasonic adds a little moisture to the room; that is the trade for the price.
SS
ISIPCA
Versailles
Versailles
A note from Sonal
The first villa I ever helped a host plan was in the hills, three floors, beautiful, and completely defeated by a single diffuser sitting on a console at the bottom of the stairs. He had bought bigger twice. What he had actually bought, twice, was more output going up a stairwell. We moved the source three metres into the living room, put a small bottle on each landing, and gave the four bedrooms one each. The total was less than his second purchase had been.
I think the reason this catches people out is that we describe houses in square feet and air does not care about square feet. It cares about volume, about temperature differences, and about whether there is an opening between one body of air and another. A closed bedroom door is a more significant obstacle than forty feet of open floor, and no specification sheet will tell you that.
The other thing I would say to any host reading this: be careful about what you believe a scent can do for you. It can make an arrival feel considered, and that is worth having. It cannot clean your air, and no one can honestly tell you what it does to a rating. I would rather sell you three small bottles that solve the actual problem than one large machine that solves an imagined one. The Vaayu is made in India, our fragrances are composed in Pune, and a portion of every order funds a girl's classroom through Nanhi Kali.
Frequently asked questions
Will one diffuser scent a whole two-floor villa?
Only if the two floors are genuinely one connected volume with no doors closed between them, which is rare in a rented property. A coverage figure — 1000m³ for the Vaayu, 270–320 sq ft for the Sukoon — describes connected air. Plan one source for the common floor and a small source for each closed room.
Should I put the diffuser at the top or the bottom of the stairs?
Neither. Put it on the floor with the most guest hours and keep it a couple of metres clear of the stair opening, so the chimney effect does not take a share of the output before the room has had it. A reed diffuser on the landing itself is a good idea, but for the person walking past it — not as a way of feeding the floor above.
Do I need a diffuser in every bedroom of the villa?
If housekeeping closes the bedroom doors between guests — and almost every operation does — then yes, each bedroom needs its own small source, because nothing from the common floor reaches it. A 50ml reed diffuser at ₹749–₹849 lasts six to eight weeks, needs no power point and cannot be spilled by a guest. Evening Calm is the softest we make and the safest choice for a room someone sleeps in.
Can I buy more oil for the Vaayu once the 400ml runs out?
Not from SOSA at the time of writing. The machine ships with four 100ml cold-air fragrances, 400ml in total, specified at 90+ days per fill, and there is no separate Vaayu refill oil on sale today. The water-based Hotel Collection is a different product for ultrasonic machines and must not be used in a Vaayu. If continuity matters, check the current position with SOSA before you buy.
Will scenting my villa improve my listing's performance?
Nobody can promise that, and this page does not. What a host is buying is the guest's experience of arrival — the first ninety seconds after the door opens, which is real and describable. Ratings, reviews, bookings and occupancy depend on a great many things, and there is no data connecting any of them to a diffuser. Buy it because you want the house to feel considered, not because you have been told what it will do to a number.
Multi-floor villa scenting · 2026
One machine on the floor guests use. Small sources everywhere a door gets closed
SOSA Vaayu ₹11,999 — waterless cold-air nebulisation, up to 1000m³, 400ml tank at 90+ days a fill, 1h / 4h / 8h / 24h timers, key-lock, under 38 dB, four 100ml cold-air fragrances in the box. Sukoon ₹1,899 for 270–320 sq ft. Reed diffusers from ₹749 for bedrooms, landings and bathrooms. SOSA does not currently sell a separate Vaayu refill — check availability before ordering if long-term supply matters. Free shipping above ₹499, and a portion of every order supports girl-child education through Nanhi Kali.
See the Vaayu → Sukoon ₹1,899
Continue the read
More on large and villa scenting
- Best scent machine for a luxury Airbnb villa — why one machine placed well beats three placed badly.
- How many diffusers does a large Airbnb need? — the counting method behind this page.
- Best diffuser for a 4BHK Airbnb — the hybrid most large listings end up running.
- The large Airbnb and villa scenting guide — this page and the eight around it, in one place.
- Brand: the SOSA founder story.
Editorial standards & sources
About this guide: Written by Sonal Sahani, ISIPCA Versailles-trained founder and perfumer at SOSA Home & Body, on how air actually moves between the floors of a villa and what that means for a host's scenting plan. Volume figures in this article are arithmetic on stated floor areas and ceiling heights and are illustrative; every coverage number quoted is a manufacturer specification for connected air and varies with ceiling height, ventilation, intensity setting and season. Nothing here is a health, wellness or air-quality claim, and no claim is made that scenting affects ratings, reviews, bookings, occupancy or revenue.SOSA Vaayu specifications (verified from the live product page, August 2026): ₹11,999 (the product page displays a rounded ₹12,000). Waterless cold-air nebulisation — pressurised air atomises undiluted fragrance oil into a dry nano-mist; no water, no heat, residue-free. Coverage up to 1000m³, about 2,000–3,000 sq ft. 400ml refillable tank, 90+ days per fill at a mid intensity setting. Bluetooth app plus onboard buttons, 1h / 4h / 8h / 24h timers, adjustable mist intensity, auto-stop and key-lock. Under 38 dB. DC 12V / 1A, 5W. 165 × 80.5 × 215 mm, 0.9 kg, black or white. Freestanding or wall / HVAC mount. CE, RoHS and SGS certified. Ships with four SOSA Hotel Collection fragrances at 100ml each (400ml in total) in one of three combos chosen at checkout. SOSA does not currently sell a separate Vaayu refill oil; the 400ml supplied in the box is the fragrance available at the time of writing, and buyers who need long-term supply should confirm current refill availability with SOSA before purchasing. The cold-air oil supplied with the Vaayu is a different product from the water-based Hotel Collection sold for ultrasonic machines (15ml ₹299 · 100ml ₹999 · 300ml ₹1,799), which must not be used in a Vaayu despite sharing scent names. Other SOSA machines: Boond 300ml ₹899 (~150 sq ft) · Sukoon 500ml ₹1,899 (270–320 sq ft) · Megh 6L ₹3,499 (~215 sq ft — a runtime and humidity machine, not a coverage upgrade) · Aangan ₹25,999 (~8,000–10,000 sq ft) · Meenar ₹38,500 (12,000–18,000 sq ft) · Safar car diffuser ₹3,999. Reed diffusers 50ml ₹749–₹849 (6–8 weeks) · 130ml ₹1,249–₹1,349 (14–18 weeks) · duo sets ₹1,498–₹1,598 · oil-only refills 300ml ₹2,399 / 500ml ₹3,499. Runtime, consumption and coverage figures are manufacturer specifications and vary with intensity setting, run hours, ceiling height, ventilation and season; any per-month or per-day figure in this guide is arithmetic on those specifications, not a measurement. Electricity costs vary by state tariff. No claim is made that scenting affects ratings, reviews, bookings, occupancy, revenue, health, mood or air quality. Free shipping above ₹499. A portion of every order supports girl-child education through Nanhi Kali. Prices subject to change — see the live product pages.