Gas leaks
A loose stove knob or a cracked pipe - Olfibelle notices long before you smell anything.
Smart safety for your homeThe world's first device that can
The world's first device that can
smell your home.
Gas leaks. Smoke. Pet odors. Stale air. Spoiled food. Battery trouble. Olfibelle detects them all - silently, continuously - and tells your phone exactly what it found.
Made in GermanyShipping late 2026
Why it mattersYou stop noticing
You stop noticing
in less than a minute.
A loose stove knob. A laptop charging on the carpet. Damp behind a wall. Your nose gets used to smells fast - long before any of it is safe. That's why we built the first device that doesn't just measure the air - it actually smells it.
First of its kindNo device like this has existed before. Olfibelle is the first consumer product that identifies specific smells using AI - not just particles or gases.
What it watches forIt smells
It smells
what you can't.
Olfibelle checks the air around you every second - and learns what your home normally smells like. So when something happens, it knows.
Gas leaksBattery troublePet accidentsStale air
When it mattersQuiet most days.
Quiet most days.
Loud only when it counts.
No sirens. No false alarms when you cook. Just a clean message on your phone - what it found, which room, and what to do next.
Live · Watching the kitchen
Sampling
4× / sec
Across 6 categories of air
Watches for
GasBatteryPetsAir
5-yr warranty · Made in Germany
Real-time Air Status
Right now · Kitchen
88Fresh Air
No gas · No smoke · Normal
Sampling 4× per second
Device connected● Active
All clear
Air looks normal
No anomalies detected in the last hour
Connected · Strong signal
Olfibellenow
Gas detected - kitchen
Open a window, then check the stove.
5-year warrantyMade in Germany$5 fully refundableShips worldwideSecure checkout
The deviceSmall enough to forget.
Small enough to forget.
Smart enough to remember.
Plug it into any outlet. Pair it with the app once. After that, it just sits there quietly watching the air, ready to ping you the moment something happens.
- Plugs straight into a regular outlet.
- No batteries. No subscription. Ever.
- Works in kitchens, bedrooms, garages - anywhere.
- Your data stays on the device, not in the cloud.
Trusted and Featured
As seen in leading media
Independent coverage across technology, automotive, and industry publications.
What it spotsOne device.
One device.
Six problems your nose already gave up on.
Olfibelle was trained on years of real-world examples. So instead of just guessing “something smells weird,” it can actually tell you what.
Battery trouble
Phones, laptops, e-bikes. When a battery starts going wrong, it gives off fumes. Olfibelle catches them early.
Pet accidents
Tells you which room and roughly when, so you can clean it up before it sets in.
Stale, stuffy air
Lets you know when it's time to open a window - instead of you only realising at bedtime.
Spoiling food
Picks up the smell of bad chicken, sour milk and forgotten leftovers before you do.
The world's first consumer device that identifies specific smells with AI.
How it works
Three steps. Then it just lives there.
01
Plug it in.
Slide it into any outlet and download the app. Setup takes about a minute - no wiring, no drilling, no electrician.
02
Let it learn your home.
For the first day or two, Olfibelle quietly figures out what your home normally smells like - cooking, cleaning, the dog, you. Then it knows what's unusual.
03
Get a heads-up when something happens.
When the air drifts off-normal, your phone pings - with the room, what it found, and what to do about it. That's it.
The basics
Everything you actually need to know.
No jargon, no asterisks. Just the simple answers to the questions people usually ask first.
Backed by real promises
- 5-year hardware warranty
- $5 fully refundable, any time before shipping
- No subscription. No hidden fees.
- Free worldwide shipping on launch
- Size
- Compact - about the size of a coffee mug
- Power
- USB-C - plug into any outlet
- Connects via
- Wi-Fi or Bluetooth
- Detection
- Gas, smoke, VOCs, pet odors, food spoilage - and more
- App
- iPhone & Android
- Warranty
- 5 years, hardware covered
- Made in
- Germany
- Best for
- Kitchens, bedrooms, garages
- Shipping
- Worldwide, late 2026
Early usersQuiet protection.
Quiet protection.
Real homes.
From the people who've been living with Olfibelle for the past few months.
“Caught a slow gas leak behind our oven before any of us smelled a thing. The plumber said we got lucky. I’d say we got Olfibelle.”
Jessica M.
Mom of three · Austin, TX
“I keep two e-bike batteries charging in the garage. Olfibelle pinged me the second one started off-gassing. Replaced it the next morning. Worth every dollar.”
Derrick W.
Software engineer · Seattle, WA
“The app is dead simple. One ping, one room, one sentence about what to do. No dashboards, no nonsense. Exactly what I want from a smart home thing.”
Anthony R.
Designer · Brooklyn, NY
“Forgot a pan on the stove and walked out to grab the kids. Olfibelle pinged me before the smoke alarm even thought about going off. That’s the whole pitch right there.”
Megan O.
Teacher · Minneapolis, MN
“Three labradors and an open kitchen. Olfibelle keeps the air honest and tells me when to crack a window. Way better than another scented candle.”
Carlos D.
Veterinarian · San Diego, CA
“Got it for my dad after his stroke. He doesn’t always notice the stove anymore. Now we both get a notification, and that’s a huge weight off.”
Rebecca H.
Caregiver · Chicago, IL
“Sits on a counter, blends in, doesn’t blink at me. I genuinely forget it’s there until something matters. That’s the highest compliment I can give a gadget.”
Tyler J.
Homeowner · Nashville, TN
“Bought one for the kitchen, ordered three more for the rest of the house the same week. No subscription, no gimmicks. Just a thing that works.”
Aisha P.
Doctor · Boston, MA
“Two dogs and an open kitchen. Olfibelle actually tells me when the air needs freshening — not just when it already smells.”
Priya R.
Apartment owner · London, UK
“Old Victorian flat, suspicious damp behind the kitchen wall. Olfibelle confirmed it within a day. Saved me a fortune in detective work.”
Oliver B.
Architect · Manchester, UK
“I bumped the stove dial closing the dishwasher. Olfibelle caught it within seconds — long before I would’ve noticed. That alone paid for it.”
Marcus K.
Homeowner · Berlin, DE
“I charge an e-bike battery in the garage. Knowing something’s keeping an eye on it is genuinely reassuring. It just works.”
Tomás L.
Engineer & cyclist · Munich, DE
“Caught a slow gas leak behind our oven before any of us smelled a thing. The plumber said we got lucky. I’d say we got Olfibelle.”
Jessica M.
Mom of three · Austin, TX
“I keep two e-bike batteries charging in the garage. Olfibelle pinged me the second one started off-gassing. Replaced it the next morning. Worth every dollar.”
Derrick W.
Software engineer · Seattle, WA
“The app is dead simple. One ping, one room, one sentence about what to do. No dashboards, no nonsense. Exactly what I want from a smart home thing.”
Anthony R.
Designer · Brooklyn, NY
“Forgot a pan on the stove and walked out to grab the kids. Olfibelle pinged me before the smoke alarm even thought about going off. That’s the whole pitch right there.”
Megan O.
Teacher · Minneapolis, MN
“Three labradors and an open kitchen. Olfibelle keeps the air honest and tells me when to crack a window. Way better than another scented candle.”
Carlos D.
Veterinarian · San Diego, CA
“Got it for my dad after his stroke. He doesn’t always notice the stove anymore. Now we both get a notification, and that’s a huge weight off.”
Rebecca H.
Caregiver · Chicago, IL
“Sits on a counter, blends in, doesn’t blink at me. I genuinely forget it’s there until something matters. That’s the highest compliment I can give a gadget.”
Tyler J.
Homeowner · Nashville, TN
“Bought one for the kitchen, ordered three more for the rest of the house the same week. No subscription, no gimmicks. Just a thing that works.”
Aisha P.
Doctor · Boston, MA
“Two dogs and an open kitchen. Olfibelle actually tells me when the air needs freshening — not just when it already smells.”
Priya R.
Apartment owner · London, UK
“Old Victorian flat, suspicious damp behind the kitchen wall. Olfibelle confirmed it within a day. Saved me a fortune in detective work.”
Oliver B.
Architect · Manchester, UK
“I bumped the stove dial closing the dishwasher. Olfibelle caught it within seconds — long before I would’ve noticed. That alone paid for it.”
Marcus K.
Homeowner · Berlin, DE
“I charge an e-bike battery in the garage. Knowing something’s keeping an eye on it is genuinely reassuring. It just works.”
Tomás L.
Engineer & cyclist · Munich, DE
First impressions
Unfiltered reactions from pre-launch interviews.
Letting me know objectively what my house smells like when I have guests coming over… oh, your house smells like cats and you have no idea.
I’m not even like thought that such things are possible.
I think it sounds really awesome.
Anything safety related would be the most useful. By far.
Intriguing and has high potential to be invaluable in the home.
Where to put itAnywhere with an outlet
Anywhere with an outlet
and air worth watching.
Most homes do well with two - one in the kitchen, one wherever you charge things (garage, office, or near your e-bike). Add more if you like.
Start with one in the kitchen. Most people order a second within the first week.
- Kitchen - gas, smoke, spoilage
- Living room - air quality
- Garage - chargers & e-bikes
- Pet rooms - early accidents
- Home office - fresher air
Founding ReservationReserve yours today.
Reserve yours today.
Pay the rest when it ships.
This is a pre-order reservation - not a same-day purchase. The device costs $49. Put down $5 today to secure your spot in the first production run, and we credit it in full when your unit ships.
- No device ships today - this is a reservation only
- Device price: $49 (free worldwide shipping included)
- $5 credited in full at shipping - you pay just $44 then
- Cancel before shipping for a full $5 refund, no questions
- No subscription. No hidden fees. Ever.
Early Access
Founding Member Pricing
Limited
Reserve today
Fully refundable · cancel any time
$5
Due at shipping (late 2026)
Only charged when your device ships
$44
Total device price
$49
Every reservation includes
- Olfibelle smart air sensor device
- Free worldwide shipping
- 5-year hardware warranty
- No subscription · no recurring fees
Reserve for $5 - fully refundable
Reservation only - no device ships today.
Your $5 is credited in full when your device ships.
Questions
The short answers.
How much does Olfibelle cost?
The device is $49, which includes free worldwide shipping and a 5-year hardware warranty - no subscription, ever. When you reserve today, you put down just $5. That $5 is fully credited when your unit ships, so you pay $44 at that point. If you change your mind before it ships, we refund the $5 in full, no questions asked.
Is this a purchase, or a pre-order reservation?
It's a pre-order reservation - not an immediate purchase. No device ships today. The $5 secures your place in the first production run (late 2026) and is credited in full against the $49 device price when we ship. Think of it as a refundable deposit that holds your spot.
Is the $5 really refundable?
Yes - fully. It just holds your spot in the first production run, and gets credited against your final order. Change your mind any time before it ships and we refund it, no questions.
When do I receive the product?
We start shipping in late 2026, in the order people reserved. You'll get a confirmation email about a month before yours leaves the factory.
How is this different from a smoke alarm?
Smoke alarms wait until something is already on fire. Olfibelle notices the small changes that come before - gas, batteries acting up, food going off, damp behind a wall. Think of it as the early warning your smoke alarm doesn't do.
What makes Olfibelle different from an air quality monitor?
Air quality monitors measure particles (PM2.5, CO2, humidity). They can tell you the air is “bad” but not why. Olfibelle identifies specific smells - it knows the difference between a gas leak and cooking smoke, between pet odor and food spoilage. It's not measuring air quality. It's identifying what's in the air.
Will it false-alarm when I cook?
It learns what your normal cooking smells like in the first day or two. After that, frying onions doesn't set it off - only things that are actually unusual.
Where does my data go?
Pretty much nowhere. The smart bit happens inside the device itself. Only short event summaries (like “gas, kitchen, 3:14am”) sync to your phone, and they're encrypted. We don't sell data, ever.
Is it safe around kids and pets?
Yes. There's no loud siren and only a soft, dim light. The device just talks to your phone - much friendlier for nurseries, bedrooms, and animals.
Has this technology been tested?
The sensing technology behind Olfibelle was originally developed for industrial applications - factories, refineries, and labs. It's been in professional use for years. Olfibelle is the first time this technology has been miniaturized into a consumer device. The concept was validated in an independent study of 1,220 consumers across the US, UK, Germany, France, and Italy.
Private by design
Your data stays on the device, not in the cloud.
Olfibelle processes everything on-device using built-in AI. Your home's smell data never leaves your home.
5-year warranty
Hardware fully covered. We replace, not patch.
Made in Germany
Designed and built in Germany.
Risk-free
$5 holds your spot. Full refund any time before shipping.
Reserve yoursFive dollars.
Five dollars.
The first device that smells your home - reserved.
$5 holds your unit in the first production run. Fully refundable. No subscription. We'll email you when it ships.
Secure checkout No spam, ever Ships worldwide