aqi of smoking a cigarette Air quality measured in cigarettes per day : r/anythingbutmetric Breathing Air Pollution Is Like
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Note: will be 'on' at all times (never 'switched' on/off)

That is why smoke complaints often sound the same: "The smell comes back every morning." Soft surfaces and HVAC airflow can reintroduce it
As the article concludes, The use of ventilation in the filters of cigarettes has failed to make cigarettes safer, and more than likely has made them more harmful. We urge the FDA to study this issue further and to consider regulating the use of vented cigarette filters and possibly banning them

Chronic exposure to e-cig in this study resulted in significantly elevated serum levels of nicotine, cotinine, adrenaline, and beta-endorphin

Chan School of Public Health warns against frequent use of scented products indoors, citing potential respiratory and endocrine effects

Someone came and took the eyeballs outI never could have done that
