★ Home odour diagnosis · AC rooms
Six tests that decide whether you are smelling the room or the appliance
The room being fine with the AC off is not incidental — it is a completed half of the diagnosis. Something in the airflow path is the source.
Start here
Test one is fan-only. Blower on, compressor off, no new condensation. If it still smells, the cause is dry deposits. If it does not, the cause is the wet coil.
Ninety seconds
Test two is the filter, held to your nose out of the unit. A month of dust in front of a dripping coil is a humid organic mat with the whole room's air rushing through it.
Two minutes
Test three is the drain. Water should run steadily from the outdoor end while the unit cools. If it does not, water is standing in the pan under the coil.
Look outside
An AC recirculates and never ventilates, so anything it emits stays in the room and concentrates over the evening rather than clearing.
No air exchange
Once the airflow path is clean, a reed diffuser from ₹749 gives the room a settled background. It adds pleasant molecules; it removes nothing.
Reeds ₹749 · Sukoon ₹1,899
The room being fine with the AC off is not incidental — it is a completed half of the diagnosis. Something in the airflow path is the source.
Start here
Test one is fan-only. Blower on, compressor off, no new condensation. If it still smells, the cause is dry deposits. If it does not, the cause is the wet coil.
Ninety seconds
Test two is the filter, held to your nose out of the unit. A month of dust in front of a dripping coil is a humid organic mat with the whole room's air rushing through it.
Two minutes
Test three is the drain. Water should run steadily from the outdoor end while the unit cools. If it does not, water is standing in the pan under the coil.
Look outside
An AC recirculates and never ventilates, so anything it emits stays in the room and concentrates over the evening rather than clearing.
No air exchange
Once the airflow path is clean, a reed diffuser from ₹749 gives the room a settled background. It adds pleasant molecules; it removes nothing.
Reeds ₹749 · Sukoon ₹1,899
✓ Diagnosis first — if the cause is damp, drainage or a filter, fragrance is not the fix ✓ Reeds from ₹749 for always-on rooms · Sukoon ₹1,899 when you want a switch ✓ Composed by an ISIPCA Versailles-trained perfumer · phthalate-free
Founder Diaries · Why does my home smell like this?
The split: fan-only mode runs the blower without chilling the coil. Smell present = dry deposits (filter, blower). Smell absent = the wet coil.
The exclusion: if it still smells with the AC off for a whole day, the unit was never the cause and you are back to bedding, curtains and ventilation.
Step fourFrom ₹749Test one: a full day with the unit off. If the room is genuinely fine, the AC is the source and everything below applies. If it is not, stop reading about coils and go and look at your bedding, your curtains and how often the room is aired. Test two: fan-only mode, cooling off, three minutes, standing a metre in front of the vent. The blower runs and the coil stays warm, so nothing new condenses. Smell present tells you the cause is dry — filter or blower. Smell absent, returning the moment cooling engages, tells you the cause is the wet coil. Do these before you clean anything at all.
Reeds · always-on roomsFrom ₹749Shop → 
Sukoon · when you want a switch₹1,899Shop → 
Hotel Collection · the scentFrom ₹299Shop →
SOSA products & prices (verified August 2026): Hotel Collection water-based ultrasonic diffuser fragrance 15ml ₹299 · 100ml ₹999 · 300ml ₹1,799 · Pack of 7 (15ml, all fragrances) ₹1,799; refills 100ml from ₹999. Seven scents: The Ritz-Carlton-inspired (white tea · bergamot · cedar), Westin-inspired (white tea · aloe · cedar), 1 Hotels-inspired (cedarwood · vetiver · green leaves), The St. Regis-inspired (amber · violet · woods), Shangri-La-inspired (jasmine · green tea · white tea), Four Seasons-inspired (citrus · floral · sandalwood), W Hotels-inspired (citrus · pepper · amber). Diffusers: Boond 300ml ₹899 · Sukoon 500ml ₹1,899 · Megh 6L ₹3,499. Water-based, phthalate-free, composed to IFRA standards for home diffusion; 3–6 drops per tank. Made in India, Pune. The Hotel Collection scents are SOSA's own interpretations inspired by the world's finest hotels; all hotel names are trademarks of their respective owners and are used only to describe the scent style — SOSA is an independent Indian fragrance house, not affiliated with or endorsed by any hotel brand. Prices and availability subject to change — see the live product pages.
You have already done more diagnostic work than you think. A smell that is absent with the unit off and present with it on has told you where it lives: somewhere along the path air takes through the indoor unit and out of the louvres. What is left is not detective work, it is elimination — six tests, none of which need a tool, a technician or a purchase, that will tell you whether you are dealing with a filter you can wash this afternoon or a coil that needs a service booking.
Quick answers — read this first
The path: room air enters the top of the indoor unit, passes the mesh filter, crosses the evaporator coil, is thrown out by the blower wheel. Condensate drips into a pan and out a pipe. Every one of those five things can smell.The split: fan-only mode runs the blower without chilling the coil. Smell present = dry deposits (filter, blower). Smell absent = the wet coil.
The exclusion: if it still smells with the AC off for a whole day, the unit was never the cause and you are back to bedding, curtains and ventilation.
The short answer
Short answer: Because the source is inside the airflow path of the air conditioner, and the blower is the only thing that delivers it to you. The likely candidates, in order of how easy they are to check: a loaded mesh filter, biofilm on the permanently wet evaporator coil, dust and lint furring the blower wheel, and standing water in a drain pan whose line is partly blocked.
The test that splits the field: Run the unit in fan-only mode with cooling off for two or three minutes. The blower runs, the coil is not chilled, no condensation forms. Smell still there means dry deposits. Smell gone means active growth on the wet coil being rewetted. That single test decides whether this is a ten-minute job or a service call.
Where fragrance fits: After the path is clean. A reed diffuser from ₹749 or the Sukoon at ₹1,899 gives a clean room a consistent character. Neither will do anything about a coil, and putting either one in front of the vent makes the problem worse rather than better.
In this guide
Always-on
Reed diffusers · from ₹749
On demand
Sukoon 500ml · ₹1,899
The scent
Hotel Collection · from ₹299
Straight answer
My room smells fine until I switch on the AC — how do I find out what is causing it?
1. Confirm the correlation before you touch anything. Leave the unit off for a full day and use the room normally. If the smell genuinely does not appear, you have ruled out bedding, curtains, the wardrobe, the bathroom door and everything else in one move. If it does appear, the AC is not your problem — it is merely stirring air around a source that was always there, and you should be looking at fabric and ventilation instead. People skip this step and then clean a coil for nothing.
2. Split dry from wet with fan-only mode. Set the unit to fan mode with cooling disabled, so the blower runs but the compressor does not. Nothing gets chilled, so nothing condenses. Three minutes is enough. Smell present means you are smelling dry deposits — a loaded filter or a furred blower wheel. Smell absent, then returning as soon as cooling starts, means you are smelling growth on the wet coil being rewetted. This one test halves the search.
3. Take the filters out and smell them directly. Lift the front cover, slide the mesh panels out, and hold one to your nose away from the unit. This is the most under-used test in the whole exercise because the answer is usually unambiguous. A month-old filter in an Indian bedroom carries a grey felt of dust, lint, hair and skin flakes, and it sits in front of a coil that is dripping, so it is never dry. If the filter alone smells like the room does when the AC runs, you have found it, and the fix is a tap and a soft brush.
4. Check where the condensate is going. While the unit is cooling, go and look at the outdoor end of the drain pipe. Water should be running out of it steadily. If it is only dripping, or not running at all, and yet the unit is clearly cooling, water is standing somewhere it should not be — usually in the shallow pan under the coil. Standing water gives a heavier, more stagnant smell than coil biofilm, and it is often worse after the unit has sat idle for a day.
5. Then decide, and put fragrance last. Filter smells: wash it. Fan-only clean but cooling smells: book a coil service. Blower visibly furred through the louvres: add it to the same booking. Drain not running: clear the line. Only when the airflow path is clean and the room has been aired properly does a reed diffuser or a Sukoon make sense — as the layer that gives a neutral room a character, not as anything that acts on the original smell.
Made in India, composed by an ISIPCA Versailles-trained perfumer — and a portion of every order supports girl-child education through Nanhi Kali.
2. Split dry from wet with fan-only mode. Set the unit to fan mode with cooling disabled, so the blower runs but the compressor does not. Nothing gets chilled, so nothing condenses. Three minutes is enough. Smell present means you are smelling dry deposits — a loaded filter or a furred blower wheel. Smell absent, then returning as soon as cooling starts, means you are smelling growth on the wet coil being rewetted. This one test halves the search.
3. Take the filters out and smell them directly. Lift the front cover, slide the mesh panels out, and hold one to your nose away from the unit. This is the most under-used test in the whole exercise because the answer is usually unambiguous. A month-old filter in an Indian bedroom carries a grey felt of dust, lint, hair and skin flakes, and it sits in front of a coil that is dripping, so it is never dry. If the filter alone smells like the room does when the AC runs, you have found it, and the fix is a tap and a soft brush.
4. Check where the condensate is going. While the unit is cooling, go and look at the outdoor end of the drain pipe. Water should be running out of it steadily. If it is only dripping, or not running at all, and yet the unit is clearly cooling, water is standing somewhere it should not be — usually in the shallow pan under the coil. Standing water gives a heavier, more stagnant smell than coil biofilm, and it is often worse after the unit has sat idle for a day.
5. Then decide, and put fragrance last. Filter smells: wash it. Fan-only clean but cooling smells: book a coil service. Blower visibly furred through the louvres: add it to the same booking. Drain not running: clear the line. Only when the airflow path is clean and the room has been aired properly does a reed diffuser or a Sukoon make sense — as the layer that gives a neutral room a character, not as anything that acts on the original smell.
Made in India, composed by an ISIPCA Versailles-trained perfumer — and a portion of every order supports girl-child education through Nanhi Kali.
TL;DR: a smell that only appears with the AC running lives somewhere in the airflow path: filter, coil, blower or drain. Fan-only mode separates dry deposits from wet coil growth, the filter can be smelled directly, and the drain can be checked from outside. Fragrance goes last and does nothing to any of it.
After the cause is dealt with
SOSA reed diffusers From ₹749
Once the tests are done and the airflow path is clean, a SOSA reed diffuser gives the room a settled background with no electricity — 50ml from ₹749 for 6–8 weeks, 130ml from ₹1,249 for 14–18, six fibre reeds included. Place it away from the vent, not under it.
Why isolating the unit beats guessing at the room
Household smells are usually diagnosed badly because people start with a hypothesis and then clean things until it goes away, which teaches them nothing and often costs a weekend. Your situation is better than that. You have an odour with a switch, which means you can turn it on and off at will and run controlled comparisons in your own bedroom. That is a genuine luxury in odour diagnosis, and it deserves to be used properly: change one variable, observe, change the next. Cleaning three things at once is the fastest way to fix the problem and still not know what it was — which matters, because you will need to know when it comes back next season.
The path itself is short and worth picturing. Room air is drawn in through the grille at the top of the indoor unit. It passes through washable mesh filters. It crosses the evaporator coil, a block of thin aluminium fins held below the dew point of your room air, where it loses heat and gives up moisture as condensation. A barrel-shaped blower wheel then throws it out through the louvres at the front. The water that condensed runs into a shallow plastic pan and out through a pipe that leaves via the wall, by gravity, with no trap and no flush. Five components, all inside one plastic box on your wall, and four of them are routinely wet or dusty or both. Nothing about a smell coming out of that assembly is mysterious.
The six tests, in the order that saves you the most work
1
TESTS ONE AND TWO · CORRELATION AND FAN-ONLY
Ninety seconds each, and they halve the search
Step fourFrom ₹749Test one: a full day with the unit off. If the room is genuinely fine, the AC is the source and everything below applies. If it is not, stop reading about coils and go and look at your bedding, your curtains and how often the room is aired. Test two: fan-only mode, cooling off, three minutes, standing a metre in front of the vent. The blower runs and the coil stays warm, so nothing new condenses. Smell present tells you the cause is dry — filter or blower. Smell absent, returning the moment cooling engages, tells you the cause is the wet coil. Do these before you clean anything at all.
Why order matters: once you have washed the filter you can no longer run test two cleanly. Test first, clean second.
2
TESTS THREE AND FOUR · THE FILTER AND THE BLOWER
Look at them, and smell them, outside the unit
Test three: slide the mesh filters out and smell one directly, away from the machine. This is the single most decisive check available to you without tools, and the answer is usually obvious within a second. A month of accumulated dust, hair, lint and skin flakes sitting in front of a dripping coil is not dry dust — it is a humid organic mat with the entire room's air being pulled through it dozens of times an hour. Test four: with the filters out, shine a torch into the housing and look at the barrel-shaped blower wheel behind the coil. If the gaps between its blades are furred grey rather than clean plastic, it is holding a substantial dust load and needs a technician — it is not a user-serviceable part on most splits.
The fix for test three: wash under a tap with a soft brush and mild soap, dry completely, refit. Monthly in season, fortnightly on a dusty road.
3
TESTS FIVE AND SIX · THE DRAIN AND THE WALL
Water where it should be, and where it should not
Test five: while the unit is cooling hard, go outside and look at the end of the condensate pipe. Steady running water is correct. A slow drip or nothing at all, on a unit that is definitely cooling, means water is backing up — usually into the shallow pan under the coil, where it stands and stagnates a few inches from the airflow. That gives a heavier, flatter smell than coil biofilm and is typically worse after a day of not using the room. Test six: look at the wall directly under and behind the indoor unit, and along the run of the drain pipe. Any damp patch, blistered paint or dark speckling is a different problem entirely and takes priority over everything else on this page.
Symptom to cause: matching your test results
Run the tests first, then find your combination of results here. The confirmation column is what stops you paying for a coil service when a two-minute filter wash was the answer.
The diagnosis table
What you notice, what it usually is, and how to be sure
| What you notice | Most likely cause | How to confirm it | What actually fixes it |
|---|---|---|---|
| Fan-only smells, cooling smells about the same ★ | Dry deposits — a loaded mesh filter, most often | Take the filters out and smell one directly, away from the unit | Wash under a tap with a soft brush, dry fully, refit; repeat monthly |
| Fan-only is clean, smell starts when the compressor engages | Biofilm on the wet evaporator coil being rewetted by condensation | Alternate two minutes fan-only and two minutes cooling, twice, and compare | A professional coil clean; fan-dry for ten minutes before every shutdown |
| Filter looks clean, blower gaps look furred grey through the louvres | Dust and lint packed into the blower wheel, downstream of everything | Shine a torch into the housing with the filters removed | Add a blower wheel clean to the next service — not a user job on most splits |
| Heavier, flatter, stagnant note; worse after a day unused | Standing water in the drain pan from a partly blocked condensate line | Check the outdoor end of the drain pipe while the unit is cooling hard | Clear the line and confirm it falls continuously along its whole run |
| Room still smells wrong after a full day with the AC off | The AC was never the source — it was only moving air past one | Use the room normally for a day with the unit off and judge on returning from outside | Air the room properly twice a day; wash bedding and curtains; check for wet traps |
| Damp patch, blistered paint or dark speckling near the unit or the pipe | A leak and mould growth — a building and health issue, not an odour problem | Look under and behind the indoor unit and along the drain pipe run with a torch | Trace the water, fix it, remove the growth. Do not fragrance this. |
| If none of these fit: note the exact number of seconds between switching on and the smell arriving. Under ten seconds is nearly always a slug of stale air from inside the casing. Two or three minutes in, building steadily, points at the coil going properly cold and wet. | |||
Shop this guide
Where fragrance comes in — after the airflow path is clean
Reeds · always-on roomsFrom ₹749Shop → Sukoon · when you want a switch₹1,899Shop → Hotel Collection · the scentFrom ₹299Shop →
The SOSA principle
You do not have a mystery. You have an odour with a switch, which is a rare gift.
Use it: change one variable at a time, and the filter, the coil, the blower and the drain sort themselves into order without a single tool.
What to do with each result
If the filter is the answer, this is a ten-minute job and it is the most common outcome. Slide both mesh panels out, rinse under a running tap from the clean side outward so the dust is pushed off rather than through, work gently with a soft brush and a little mild soap, rinse again, and then dry them completely before they go back. A damp filter refitted into a cold unit is a better home for growth than the dirty one you removed. Put a monthly reminder on your phone for the cooling season; fortnightly if you live on a main road or anywhere with construction nearby.
If fan-only was clean and cooling was not, book the service and change one habit in the meantime. Growth in the fin pack is not reachable from the front, whatever a spray can claims, because the fins are packed millimetres apart and the deposit is between them. A proper jet clean with the drain correctly routed, once before the season, is what fixes it. The habit that slows it coming back is simple: run the unit on fan-only for the last ten minutes before you switch off, so the coil dries rather than sitting wet for eight hours in a warm room. If the drain test failed too, get the line cleared at the same visit.
And if the AC turned out to be innocent, you are back to the ordinary diagnosis — which is good news, because it is free. Cross-ventilate for ten minutes twice a day, because the AC exchanges no air at all and a closed room sits at roughly 0.2–0.5 air changes an hour. Wash bedding weekly and curtains seasonally, since textiles absorb odour and release it slowly for days. Check the wet traps: unused drains, the washing-machine gasket, damp cloths folded rather than dried. Once the room is genuinely clean and dry, a reed diffuser from ₹749 gives it a permanent quiet character with nothing to operate, or the Sukoon at ₹1,899 with a Hotel Collection scent from ₹299 gives you a switch. Either way, place it out of the vent's airflow.
Fan-only mode is the cheapest diagnostic tool in the flat — it separates the room from the machine.
— Sonal Sahani, SOSA
The order that works
The tests cost nothing and the two most likely fixes cost nothing either. The purchase is genuinely worth making, and it is genuinely fourth.
The order that works
Test, clean, air — then scent
| Step | What to do | When | Cost |
|---|---|---|---|
| 1. Remove the source | Run the six tests, wash the filters, clear the drain line, book a coil and blower clean if fan-only came back clean | Before anything else | ₹0 |
| 2. Move the air | Cross-ventilate ten minutes twice a day — the AC recirculates and exchanges no outside air whatsoever | Daily, five to ten minutes | ₹0 |
| 3. Deal with what holds it | Fan-dry the coil for ten minutes before shutdown; wash bedding weekly; wash filters monthly through the season | Weekly to monthly | ₹0 |
| 4. Then the always-on layer ★ | A SOSA reed diffuser — a settled background in a room that is now neutral — placed away from the vent, four reeds in a bedroom | 50ml 6-8 weeks · 130ml 14-18 | from ₹749 |
| 5. Or the on-demand layer | Sukoon with a Hotel Collection scent — scent on demand in a living room or study; roughly 270–320 sq ft of coverage from one machine | Run it when you want it | ₹1,899 |
Honest notes before you buy: the order above is not padding, it is the whole method. Home fragrance is an additive layer — it puts pleasant molecules into the air, it does not remove unpleasant ones. Scenting over a live odour source gives you both smells at once, which reads worse than the original problem, and it removes the signal that was telling you something needed attention. Three causes in particular are never a fragrance problem: visible or suspected mould, which is a health issue and needs the moisture source found and the growth removed; a drain or sewer smell, which usually means a dry P-trap or a failed seal and is a plumbing job; and a gas-like or burning smell, which should be treated as an emergency, not an odour. Persistent damp in a wall or ceiling is a building fault and needs a professional. Once the room is genuinely clean and dry, SOSA reed diffusers run oil-based fragrance with no electricity, while the Sukoon (₹1,899) runs the water-based Hotel Collection — the two liquids are not interchangeable. Reed fragrance is composed and made in India, in Pune; both are phthalate-free and composed to IFRA standards for home diffusion, not for skin or ingestion. A portion of every order supports girl-child education through Nanhi Kali.
The on-demand layer
SOSA Sukoon · 500ml ₹1,899
Once the room is clean and dry, the Sukoon at ₹1,899 gives you scent with a switch — run it for an hour before people arrive rather than all day. It takes 3-6 drops of the water-based Hotel Collection (from ₹299) and covers roughly 270-320 sq ft. A reed diffuser is the opposite trade: no switch, no effort, always on.
SS
ISIPCA
Versailles
Versailles
A note from Sonal
I like this question because the person asking it has already done the hard part without knowing it. You noticed a correlation. Most people never get that far with a household smell — they clean, it comes back, they clean again. You have an odour you can switch on and off, which means you can test it properly, and nothing I sell is remotely as useful to you as three minutes in fan-only mode.
The mistake I would like to talk you out of is buying an AC odour spray, and there are plenty of them. They are fragrance in an aerosol, and they are being asked to act on growth that is sitting between aluminium fins two millimetres apart, several centimetres deep, behind a filter. The fragrance reaches the front face of the coil and the growth stays exactly where it was. You end up with two smells arriving on the same air stream, which is worse than one.
When the unit is clean, come back and scent the room properly — and do not put the bottle under the vent, which is the other thing people try. Away from the airflow, on a stable surface, four reeds rather than six in a bedroom. That gives you a room that smells of something you chose rather than something you tolerated. A portion of every order funds a girl's classroom through Nanhi Kali.
Frequently asked questions
My room smells fine until I switch on the AC — what is causing it?
Something in the airflow path of the indoor unit. Room air passes a mesh filter, crosses an evaporator coil that is permanently wet while cooling, and is thrown out by a blower wheel; condensate drains through a pipe with no trap. A loaded filter, biofilm on the coil, a furred blower and standing water in the drain pan are the four candidates, and simple tests separate them without any tools.
What does fan-only mode tell me?
It separates dry causes from wet ones. In fan-only the blower runs but the compressor does not, so the coil is not chilled and no condensation forms. If the smell is still present, you are smelling dry deposits — a loaded filter or a dusty blower wheel. If it is absent and only returns once cooling starts, you are smelling growth on the wet coil, which needs a professional clean rather than a spray.
Can I clean the evaporator coil myself?
Not properly. The fins are packed a couple of millimetres apart and the growth sits deep between them, so a spray applied to the front face reaches almost none of it. A technician with a jet cleaner and the drain correctly routed does the job in one visit, ideally before the hot season rather than in the middle of it. What you can do yourself is wash the filters monthly and dry the coil with ten minutes of fan-only before shutdown.
Do AC odour sprays work?
Not on the actual cause. They add fragrance to the air stream while the growth on the coil stays exactly where it is, so you get both smells arriving together, which usually reads worse than the original. This applies to every brand of home fragrance including ours: scent is additive, never subtractive. Clean the filter, service the coil, clear the drain — those are the things that change the smell.
Once the AC is clean, what should I put in the room?
A reed diffuser from ₹749 if you want a permanent background with no electricity and nothing to operate, placed well away from the vent's airflow rather than in it. Or the Sukoon at ₹1,899 with three to six drops of a water-based Hotel Collection scent from ₹299 if you would rather switch it on and off; it covers roughly 270–320 sq ft. The oil-based reed liquid and the water-based Hotel Collection are not interchangeable.
After the tests, and after the cleaning
Find the part first — then give the room something of its own
SOSA reed diffusers composed and made in Pune, 50ml from ₹749 for 6–8 weeks or 130ml from ₹1,249 for 14–18, six fibre reeds included. Or the Sukoon at ₹1,899 with a Hotel Collection scent from ₹299 when you want a switch rather than something always on. Neither acts on a coil, a filter or a drain. A portion of every order supports girl-child education through Nanhi Kali.
Shop SOSA reed diffusers → See the Sukoon ₹1,899
Continue the read
More on air-conditioned rooms and smell
- Why does my split AC sometimes smell musty? — coil, blower, pan and drain line.
- Can a dirty AC filter make a clean bedroom smell bad? — a month of dust becoming a smell.
- A clean bedroom that smells strange with the AC on — what cleaning never reaches.
- Should I put a reed diffuser near the AC? — the honest answer, and the right placement.
- 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. Odour diagnosis here is general building and household guidance, not a substitute for a plumber, an electrician or a damp specialist where one is needed. Fragrance longevity and coverage figures are SOSA's own for the stated products; the underlying principles — sorption into soft materials, air-change rate and olfactory adaptation — are general.SOSA products & prices (verified August 2026): Hotel Collection water-based ultrasonic diffuser fragrance 15ml ₹299 · 100ml ₹999 · 300ml ₹1,799 · Pack of 7 (15ml, all fragrances) ₹1,799; refills 100ml from ₹999. Seven scents: The Ritz-Carlton-inspired (white tea · bergamot · cedar), Westin-inspired (white tea · aloe · cedar), 1 Hotels-inspired (cedarwood · vetiver · green leaves), The St. Regis-inspired (amber · violet · woods), Shangri-La-inspired (jasmine · green tea · white tea), Four Seasons-inspired (citrus · floral · sandalwood), W Hotels-inspired (citrus · pepper · amber). Diffusers: Boond 300ml ₹899 · Sukoon 500ml ₹1,899 · Megh 6L ₹3,499. Water-based, phthalate-free, composed to IFRA standards for home diffusion; 3–6 drops per tank. Made in India, Pune. The Hotel Collection scents are SOSA's own interpretations inspired by the world's finest hotels; all hotel names are trademarks of their respective owners and are used only to describe the scent style — SOSA is an independent Indian fragrance house, not affiliated with or endorsed by any hotel brand. Prices and availability subject to change — see the live product pages.