Vaping / E-Cigarette Aerosol

Inhaling and exhaling e-cigarette vapour indoors.

46Moderate burden · out of 100

Cleaner swapQuit vaping; seek nicotine-cessation support

How this score is built

100Start
67.8Chemical hazard 7 × 4.6−32.2
50.8Everyday exposure 5 × 3.4−17
46Persistence 2 × 2.6−5.2, then rounded to 46
ModerateThe band46 sits in 40–59.

What each input rests on

The three ratings behind the score, and the studies each rests on
Input	Rating	Evidence
Chemical hazard	7/10	unsourced input
Everyday exposure	5/10	In six two-hour vaping sessions in a ventilated room, indoor air carried 1,2-propanediol, glycerine and nicotine, PM2.5 averaging 197 micrograms/m3, a 20% rise in PAH to 147 ng/m3 and a 2.4-fold rise in aluminium. Use of electronic cigarettes (e-cigarettes) impairs indoor air quality and increases FeNO levels of e-cigarette consumers · Int J Hyg Environ Health 2014 DOI 10.1016/j.ijheh.2013.11.003 · PMID 24373737 · Abstract · read 2026-10-06
Persistence	2/10	unsourced input

Ratings are editorial. A study listed here supports the rating; it did not compute it. How the index is built

What this means for you

The chemical-hazard rating is what drives the score down. E-cigarette aerosol is not just water vapour: peer-reviewed analyses find heavy metals such as lead, nickel and chromium leached from the coil, plus formaldehyde and fine particulate. Secondhand vapour exposes bystanders too.

Evidence strength: moderate

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Lower-exposure choices

HEPA-Filtered Indoor AirMinimal · Air

All 13 air entries, highest burden first →