The Alliance of Boulder County
on Tobacco and Health

Chemicals in Tobacco Smoke

Tobacco smoke contains more than 4,000 chemicals, including 250 materials known to be toxic and/or carcinogenic to the human body. It is an open question whether all of those 4,000+ chemicals have even been tested for human toxicity. Here is a list of some of the more serious ones, along with maximum exposure limits from ACGIH, NIOSH, and Occupational Safety and Health Administration (OSHA). For comparison, the human odor threshold is listed if possible.

And note that toboacco smoking, smokeless tobacco and environmental tobacco smoke (ETS) are now recognized as carcinogens.

References for further study -

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