SOTTO — the room smells like somewhere you'd pay to stay

This is the whole thing.Eighteen seconds, no voice, nothing to install

You put it where you want the room to start, and it runs on a schedule you set once. No water to top up, no flame, no heat — and no cloud of steam announcing itself. If it is working, the room simply smells like somewhere you would pay to stay.

Or don’t look at it at all.The best-smelling houses never show you where it comes from

It is 245 × 167 × 44 mm — about the size of a hardback. Which means it sits on a shelf as an object, or it disappears behind one and does the same job.

No plug-in glow. No plastic flower sticking out of a bottle. Nothing that tells a guest you were trying.

The diffuser tucked behind a row of books, barely visible

One hand moves it.520 g, so it goes where the smell actually matters

Battery means it isn’t furniture. It moves — the entry before people arrive, the bathroom before they use it, the car on Monday morning.

Set the intensity and the hours in the app, then forget it. It shuts itself off.

The diffuser with its side door open beside an aluminium scent bottle

The one nobody thinks of.You spend an hour a day in there

A car is a small sealed room you sit in every day, and most of them smell like the last thing someone ate in them. One unit on the passenger seat or wedged upright in the footwell, running fifteen minutes before you leave.

The diffuser standing upright on the passenger seat of a car at night

Four oils. Not four fragrances.100% pure essential oil — named after what is actually in the bottle

FRANKINCENSE

Dry, warm resin with a faint citrus edge. The one that was worth carrying across a desert.

Entry · living room — the first thing anyone decides about your house

AMYRIS

Soft warm wood with a little smoke behind it. You have probably never heard of it — it is the quiet one, and it is what we can put in the bottle at this price without lying to you about what it is.

Bedroom — run it an hour before you sleep

CEDAR

Dry wood, like a freshly sharpened pencil. Cold rather than sweet.

Office · study — the one that doesn’t distract

MYRRH

Warm, balsamic, faintly smoky. Older than every perfume house that exists.

Evening, anywhere — the heaviest of the four

One bottle lasts six to eight weeks.Then it’s a refill, not a new machine

Pure essential oil — no water, no carrier, no alcohol, no synthetic fragrance. That is also what the manufacturer’s manual requires: anything diluted clogs the pump.

100 ml per bottle, six to eight weeks on a moderate schedule — longer if you run it low, shorter if you run it hard. The reservoir in the machine holds 500 ml, so one bottle goes in with room to spare.

Sealed, and never plastic. Fragrance oil eats cheap plastic and you end up smelling the bottle.

Ninety seconds, then you leave it alone.

ONE

Pour the scent in. The unit opens with a key and the reservoir lifts out. Fill it, drop it back, done — no water, no measuring.

TWO

Pick hours and intensity in the app. Once. It repeats every day.

THREE

Put it somewhere. Shelf, or behind one. It shuts itself off.

The specification

Method	Two-fluid cold-air atomising — waterless
Coverage	300–500 m³ · approx. 1,300–2,200 sq ft at an 8 ft ceiling
Power draw	1 W · 6 V
Power source	Rechargeable battery, or USB-C plugged in
Control	Aroma-Link app over Bluetooth — iOS and Android
Programmes	5 schedules · example window 8:00–22:00
Intensity	Mist every 15–120 s, for 10–120 s at a time
Size · weight	245 × 167 × 44 mm · 520 g
Reservoir capacity	500 ml — one 100 ml bottle goes in with room to spare
Certification	FCC · RoHS
Oil	Undiluted oil only — no water, no carrier, no alcohol. The manual says the same
Heat	None. The oil is never burned

In the box

The diffuser — 245 × 167 × 44 mm
The refillable reservoir and the key that opens it
US plug adapter and USB-C cable
Your scents — 100 ml each, sealed
One-page setup card — no manual to read

Two parcels, not one — and we would rather say so now. The machine and the scents are made in different places and travel separately, so they will not arrive on the same day. Both are free, both are tracked, and neither is late because the other one hasn’t landed yet.

We launched this month. There are no reviews yet.And we’re not going to write ourselves any

Every store selling one of these has a wall of five-star quotes from people with stock-photo faces. Ours would take twenty minutes to fabricate and you would never know. So here is what we can actually put behind this instead.

Oil, not fragrance

Every diffuser brand at this price sells synthetic fragrance oil — usually a copy of a hotel lobby. Ours are four single pure essential oils, named after the plant they came out of. The honest trade: pure oil is quieter and fades faster than synthetic. If you want a room that shouts, buy the other thing.

The mechanism is not ours

Two-fluid cold-air atomising is the same method used to scent hotel lobbies and showrooms. It is not a new invention we are asking you to believe in — it is the commercial standard, in a housing sized for a room instead of a building.

The numbers are checkable

300–500 m³, 1 watt, 245 × 167 × 44 mm, 520 g, 500 ml, FCC and RoHS. Every one of those comes off the manufacturer’s own manual, not off a competitor’s advert — and if any of them is wrong when it arrives, that is a defect and it is covered.

The risk sits with us, not you

Broken on arrival: a photo within 7 days and another ships, nothing comes back. Faulty inside 90 days: replaced. Unopened inside 30 days: refunded. We put that in writing before you have given us anything.

We tell you what it doesn’t do

It is not a purifier and not a humidifier, it makes noise in a silent room, and the lowest setting in a large room is deliberately subtle. A store that only lists strengths is a store that has not used the product.

When real buyers have said something, their words go here with a link to where they said it. Until then this space stays honest.

Questions

Is this one of those things that stops working after a month?

The failure people describe with cheap diffusers is a clogged nozzle, and it happens because water-based units grow residue. This one never touches water — it atomises the oil directly. If it does stop atomising inside 90 days, we replace it.

How strong is it, honestly?

You control two things in the app: how often it mists (every 15 to 120 seconds) and for how long (10 to 120 seconds). At the low end in a large room it is the level you notice walking in and forget two minutes later, which is the point. At the high end it is obvious.

What if the scent seems weak?

Nine times out of ten the oil bottle isn’t screwed in tight — that is the first thing the manufacturer’s own fault table lists. Second is something blocking the mist outlet. Both take ten seconds. If neither fixes it, that is a defect and it’s covered.

Do I have to use your oil?

No. The reservoir inside is refillable and it isn’t a cartridge — you open the unit, lift it out, pour in whatever you like, and drop it back. There is no chip, no proprietary pod, and nothing stops working if you buy scent somewhere else.

The one real rule: undiluted oil — no water, no carrier oil, no alcohol. Anything diluted clogs the pump — the manufacturer’s own manual says the same. Ours is pure and sized for this unit, which is the only reason we sell it.

Will it leak in the car?

Not upright, and it is designed to sit upright. Lying it on its side with a full bottle in is the one way to make a mess, so don’t transport it that way.

How long does shipping take, and why two parcels?

Two to four weeks in the US, free, and you get tracking the moment each one leaves. We say four because we would rather be early than sorry — most orders land well inside that. The machine and the scents come from different facilities, so they ship separately and usually arrive a day or two apart. Most stores let that surprise you and you assume half the order got lost — we would rather you know before you buy than email us about it after.

What if it arrives broken?

Photograph it within 7 days and another one ships. You don’t pay twice and you don’t send anything back — returning it costs more than the unit is worth.

Broken on arrival, and another one ships

Send a photo within 7 days and a replacement goes out. You never pay twice, and nothing has to come back to us.

Changed your mind inside 30 days and haven’t opened it — we refund it, return shipping on you. Opened and used we can’t take back, and we’d rather say that here than argue about it later.

Your house has a smell. You just can’t smell it anymore.