6 cigarettes a day Average number of smoked per hour of the day, maximum How I Quit Smoking on

Some devices produce more vapor per puff

So it would be prudent to limit the exposure if possible

Sy D, El-Awa F, Al-Lawati JA, Valizadeh B, El-Gohary S, El-Wakil R, Narain A (2024) Towards health with justice: making the tobacco industry accountable through administrative liability

The study which showed that vapour from e-cigarettes can damage or kill human cells was publsihed as the devices are to be rolled out by UK public health officials as an aid to quit smoking from 2016

Unlike cigarettes, where the nicotine intake is fixed per cigarette, vaping affords flexibility in adjusting nicotine levels by choosing different e-liquid strengths