Can I put fragrance in a humidifier? Only if it is specifically made to take fragrance. Do not add fragrance to a plain humidifier that is not designed for it - it can damage the machine. Use an aroma diffuser instead.
What should I use for scent? A SOSA ultrasonic aroma diffuser with the water-based SOSA Hotel Collection fragrance. SOSA's larger Phuhaar humidifies and also takes the fragrance.
What each machine is actually for
Start with what each one is designed to do, because that is where the confusion comes from. An aroma diffuser exists to put scent in the air. It holds a relatively small amount of water, you add a few drops of a water-based diffuser fragrance, and the ultrasonic plate mists that scented water across the room. The water is mostly a carrier for the fragrance. A humidifier exists to put moisture in the air - it holds a much larger tank, runs for hours, and its whole purpose is to raise the humidity of a dry room. Fragrance is not part of its design; many humidifiers explicitly tell you to use water only.
| What you want | Aroma diffuser | Plain humidifier |
|---|---|---|
| Main job | Scent the room | Add moisture to the room |
| Made for fragrance? | Yes - a few drops in water | Usually NO - water only |
| Tank size | Small (scent carrier) | Large (hours of moisture) |
| Mist output | Light, scent-carrying | Heavy, for humidity |
| Add fragrance? | Yes, water-based fragrance | Only if it explicitly says so |
| Risk of adding oil | None - it is built for it | Can damage seals and parts |
So the honest one-line answer is: a diffuser is a scent machine that uses a little water, and a humidifier is a moisture machine that you should usually keep to plain water. They can look almost identical on a shelf, and both mist - which is exactly why people pour fragrance into the wrong one. The label and the manual tell you which machine you have.
Don't add fragrance to a plain humidifier
This is the part I most want you to take away, because it saves a machine. If your humidifier is a plain humidifier - sold for moisture, with no mention of essential oils or fragrance - do not add fragrance to it. Fragrance and oils can break down the plastics, gum up the seals, and coat or clog the parts that create the mist, none of which the machine was built to handle. At best you get a poor, uneven scent; at worst you damage a humidifier that would have happily run on water for years. "It mists, so it must take fragrance" is the assumption that ruins them.
The right way to scent a room is to use an aroma diffuser with a fragrance made for it. A SOSA ultrasonic diffuser takes water and a few drops of the SOSA Hotel Collection - a water-based fragrance that is IFRA-standard and phthalate-free, composed in Pune by an ISIPCA-trained perfumer specifically to mist cleanly. A few drops in the tank, never neat oil, and the room carries that hushed hotel-lobby calm in seven scents. There is one happy exception in our own range worth knowing: SOSA's larger Phuhaar both humidifies a room and is made to take the fragrance, so if you want moisture and scent together, that is the machine designed to do both safely.
A last honest note so the line is clean. An aroma diffuser scents a room and adds a little humidity; a humidifier adds meaningful humidity; neither of them purifies your air. So choose by the job you need - scent, moisture, or with the Phuhaar, both - and match the fragrance to a machine that is built to take it. That is the whole of it.
The SOSA range
The SOSA Hotel Collection is a water-based ultrasonic diffuser fragrance (a refill for your SOSA diffuser) in seven scents, each our own interpretation of the signature style a famous hotel is known for. A few drops in the water tank and the room carries that hushed, expensive calm. Prices below are the 15ml; it also comes in 100ml and 300ml.
| Hotel-inspired scent | Character | Best for | From |
|---|---|---|---|
| Quiet Luxury (Ritz-Carlton-inspired) | White tea + bergamot + cedar | Lobby calm; living room | ₹299 |
| White Tea Serenity (Westin-inspired) | White tea + aloe + cedar | Spa-clean; bedroom | ₹299 |
| Forest Suite (1 Hotels-inspired) | Cedarwood + vetiver + green leaves | Biophilic; study | ₹299 |
| Old-World Glamour (St. Regis-inspired) | Amber + violet + woods | Evening elegance | ₹299 |
| Tea Garden (Shangri-La-inspired) | Jasmine + green tea + white tea | Serene; quiet rooms | ₹299 |
| Warm Welcome (Four Seasons-inspired) | Citrus + floral + sandalwood | Gracious; reception | ₹299 |
| Lobby Bar (W Hotels-inspired) | Citrus + pepper + amber | Bold; entertaining | ₹299 |
Versailles
I trained as a perfumer at ISIPCA in Versailles, and the one thing every great hotel taught me is that scent is the first thing you notice and the last thing you forget. I wanted to bottle that feeling for the home.
So the Hotel Collection is seven water-based diffuser fragrances, each my own interpretation of the style a famous hotel is known for - composed in our own lab, made to run cleanly through a SOSA ultrasonic diffuser. Please use the SOSA diffuser fragrance only; raw essential or carrier oils are thick and can clog the misting plate.
To be clear and honest: these are inspired interpretations, not the hotels' actual proprietary scents. SOSA is not affiliated with or endorsed by the hotels named - the names just describe the scent style. I would rather you knew exactly what you are buying: a perfumer's take on that hushed, expensive calm, at an honest price.
Frequently asked questions
Facts verified June 2026: SOSA Hotel Collection is a water-based ultrasonic diffuser fragrance (refill) in 7 hotel-inspired scents - 15ml ₹299, 100ml ₹999, 300ml ₹1799 - composed in India by an ISIPCA Versailles-trained perfumer to fragrance-industry (IFRA) standards, phthalate-free, made to run through SOSA ultrasonic diffusers (Boondh, Sukoon, Phuhaar) and NOT for reed diffusers, waterless nebulisers, skin or wax burners; use SOSA diffuser fragrance only (raw essential/carrier oils can clog the misting plate). These are independent, hotel-inspired fragrance interpretations created by SOSA. SOSA is not affiliated with, endorsed by or associated with the hotels named; all hotel names are trademarks of their respective owners and are used only to describe the scent style.