Independent lab testing

We testedthe air.

An independent lab analysed the air you breathe through a Lio. These are the results.

0
NicotineNot a trace.
0
TobaccoNo leaf, no derivatives.
0
CombustionNothing burns or heats up.

Verified with GC-MS analysis

A man taking a draw from an olive wood LioNo battery. No heat. No electronics.

What's in a Lio?

Three natural materials, powered by your breath.

  • WoodHand-finished olive or walnut.
  • Plant-fibre coreHolds the flavour. No electronics.
  • Botanical oilsFood-grade, from real plants.
  • Your breathThe only thing that powers it.

What's in the air?

What the lab found in the air, and what it didn't.

In the air

  • ✓Clean air
  • ✓Natural mint aroma
  • ✓Citrus and pine notes
  • ✓A cooling sensation

Not in the air

  • ✕Nicotine
  • ✕Tobacco
  • ✕Smoke or vapour
  • ✕Batteries

How we tested it.

An ingredient list shows what goes in. We wanted to know what comes out.

1

An independent lab

Not our own. The results are theirs, not ours.

2

The air, not the recipe

They analysed the air drawn through a Lio during normal use.

3

Clear results

Natural plant aromas only. No nicotine, tobacco or combustion.

GC-MS?Gas chromatography–mass spectrometry. The standard lab method for identifying exactly what's in a sample.

What the research says.

Scent, breathing and habits have been studied for decades. Here are the key findings, and how strong each one is.

StrongModerate
6,539people across 76 studies

Pleasant scents are linked to lower stress.

The best-supported finding. Dozens of trials across thousands of people point the same way.

Strong evidence
Sources

Gong et al., 2020 (32 RCTs) · Hedigan et al., 2023 (76 studies, 6,539 patients) · Liu et al., 2022

232smokers in one study

A pleasant scent can ease a craving in the moment.

One well-run study. The effect was measured over minutes, not months.

Moderate evidence
Sources

Sayette et al., 2019 · Journal of Abnormal Psychology

2controlled trials

The feel of the draw matters.

It's not only the scent. The sensation in the throat and chest plays a real role.

Moderate evidence
Sources

Westman et al., 1995 · Chest · Rose et al., 1994 · Drug & Alcohol Dependence

43,992people analysed

The hand-to-mouth ritual matters.

The gesture is a real part of the habit, not just background noise.

Moderate evidence
Sources

Black et al., 2020 · Addiction · Zamboni et al., 2025 · Frontiers in Public Health

≤20minutes per session

Short, active use works best.

A few slow, focused breaths outperform passive, longer exposure.

Moderate evidence
Sources

Guo et al., 2020 (20 RCTs, 1,717 adults) · Sattayakhom et al., 2023 · Molecules

What we don't claim.

These studies looked at scent, breath and ritual in general, not at Lio itself. They explain why Lio is designed the way it is. Nothing more.

  • ✕Not a medical device
  • ✕Not a smoking-cessation product
  • ✕No health claims

Good to know.

01

Natural isn't nothing

Botanical oils are real plant chemistry. That's why Lio delivers only a light, low-exposure aroma.

02

Sensitivities

Some people react to plant aromas. If you notice irritation, stop using it and consult a professional.

03

Pregnancy & medication

If you're pregnant, breastfeeding or on medication, check with your doctor first.

04

Children & pets

Store Lio and its cores out of reach. Cores are not for consumption.

Common questions.

Is there nicotine in Lio?

No. Independent testing of the air confirmed zero nicotine. Lio has never contained it.

What am I actually breathing?

Air, carrying a light natural aroma from food-grade plant oils, such as mint, citrus and pine. Nothing is burned or heated.

Does it get hot or use a battery?

No. There's no battery, coil or heating element. Just wood, a plant-fibre core and your breath.

What did the lab test?

The air drawn through a Lio during normal use, analysed by GC-MS. The result: natural plant aromas only.

Is Lio a quit-smoking product?

No. Lio is a nicotine-free flavoured-air ritual. We make no cessation claims.

Tested. Explained. Nothing hidden.

Have a question? Ask us and we'll give you a straight answer.

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 in general and did not evaluate Lio. If you are pregnant, breastfeeding or taking medication, speak with a physician before use.