We tested the flavoured air.
We tested the air you draw through a Lio, analysed by an independent laboratory to confirm what is in your breath, and what is not.
An ingredient list tells you what goes in. We wanted to know what comes out.
What actually reaches you when you breathe through a Lio? So we had the air itself analysed by an independent laboratory using GC-MS, the standard method for identifying what is in a sample. Here is the honest version, in plain language.
Just botanicals. Nothing you can't pronounce for a reason.
The compounds carried on your breath are natural aroma molecules, the same ones that give mint, eucalyptus and citrus plants their character. And the device itself is about as simple as a device gets.
Natural mint terpenes & aromatics
These are the plant-derived molecules behind the scent, from food-grade essential oils, carried on pure air drawn by your own breath.
The natural aroma family behind a mint core. Nothing is burned, heated or vaporised. The scent simply lifts on the air you draw.
Three natural things, and your own breath.
No cartridge to fill, no coil to burn, no battery to charge. Lio is a physical object made of natural materials. That is the whole story.
What's in it. What never will be.
One column is the natural aroma you draw in. The other is what simply isn't there, and never will be. No fine print between them.
In the air
Natural aromaNot in the air
None
The evidence, read honestly.
Lio is built on four sensations people miss: a pleasant scent, the throat feel of a draw, a slow breath, and something to reach for. Researchers have studied each of these for decades. Here is what that work supports, and how far it goes.
What the research supports.
Each finding below maps to one of the sensations Lio is built around. Tap to see the studies, and how strong the evidence really is.
The best-replicated benefit of pleasant scent, and the one that matters most, since so much smoking and vaping is stress-driven. A meta-analysis of 32 randomized trials found meaningful drops in anxiety, and a review of 76 studies and 6,539 patients found most reported feeling calmer. Different settings, same direction.
In a randomized study of 232 smokers, self-selected pleasant odours eased cue-triggered craving more than neutral or tobacco-related ones, and the relief held across a short window. About 90% said they could picture using a pleasant scent in real life. A real, direct signal, measured in minutes, not months.
Part of what people miss is the feel of a draw in the throat and chest. In controlled trials, smokers who felt stronger airway sensations got more craving relief, and inhaling black-pepper vapour eased craving and calmed anxiety more than a scent-only or empty control, working partly through throat and chest feel, not smell alone. That sensory dimension is exactly what a deep draw through Lio delivers.
The gesture isn't just habit-noise. Across 43,992 participants, approaches that deliberately target cues and routines, giving the hand and mouth something else to do, shifted outcomes more than willpower alone. Newer work finds the pull of smoking gestures tracks with anxiety and self-soothing, not nicotine alone. A ritual you can keep is the thing Lio is designed to be.
How you use scent matters as much as which scent. Inhaled aromatics measurably move breathing rate and heart-rate variability toward a calmer state, and reviews find short, directed sniffing more effective than passively filling a room, with sessions of 20 minutes or less outperforming longer ones. A thing you pick up, breathe from, and put down. The exact shape of Lio.
None of these are studies of Lio itself. They study scent, breath and ritual in general, and we share them as the thinking behind how Lio is built. Lio is a nicotine-free botanical ritual, not a cessation treatment or medical device. Where the research is strong, we lean on it. Where it stops, so do we.
The honest fine print, in large print.
A botanical product made from natural plants, designed for low-exposure aroma delivery. A few plain-language notes.
Natural doesn't mean nothing
Essential-oil compounds are real plant chemistry, which is exactly why Lio is built for low-exposure aroma delivery: trace amounts of scent lifted on pure air, nothing burned or concentrated.
Sensitivities happen
Some people are sensitive to plant-derived aroma compounds. If you notice irritation, stop using and consult a professional.
Pregnant, lactating, or on medication
Speak with a physician before use.
Children & pets
Keep Lio and its cores stored out of reach. The cores are not for ingestion.
Straight answers.
Does Lio contain nicotine? +
No. Zero. Independent GC-MS analysis of the inhaled air confirmed it: no nicotine, no tobacco, no synthetic analogues. Lio has never contained nicotine.
So what am I actually breathing? +
Pure air, drawn by your own breath through a botanical core, carrying trace natural aroma compounds from food-grade essential oils: mint terpenes and aromatics like menthol, menthone, limonene, eucalyptol and pinene. Nothing is burned, heated or vaporised.
What did the independent testing look at? +
An independent laboratory used GC-MS, a standard method for identifying what is in a sample, on the air you draw through a Lio during normal use, to confirm what is present and what is not. In plain terms: only natural plant-derived aroma compounds, and none of the things you would want to rule out.
What does the research actually show? +
The strongest, best-replicated finding is that inhaled scent is linked to lower anxiety and stress, across dozens of randomized trials and thousands of people. There is also direct evidence that a pleasant scent can ease an acute craving in the moment, that the throat and airway sensation of a draw carries real weight, and that the hand-to-mouth ritual itself matters. What the research does not establish is that any scented device helps people quit long-term, so we do not claim it.
Is Lio a quit-smoking product? +
No. Lio is a nicotine-free botanical ritual, a fresh thing to reach for. Independent research supports why scent, breath and ritual feel meaningful, but it does not establish long-term cessation effects, and we make no such claims.
Independently tested. Plainly explained.
Everything here comes from independent GC-MS analysis of the air you breathe through a Lio, plus peer-reviewed research on scent, breath and ritual. If anything is unclear, ask us. We will answer directly.
Lio is a nicotine-free botanical product and is not a medical device. It is not intended to diagnose, treat, cure or prevent any disease, and makes no smoking-cessation claims. Research referenced on this page studied scent, breathing and ritual mechanisms in general and did not evaluate Lio. If you are pregnant, lactating, or taking medication, speak with a physician before use.