Reference summary — not medical advice or a personal risk estimate.
Tobacco smoke
Combustion products from cigarettes, cigars, and pipes — inhaled directly or as secondhand exposure.
Also known as: cigarette smoke, secondhand smoke
IARC-classified factors documented in this product
- Contains · Source: IARC Monograph 100E
Present in tobacco leaves; released as aerosol when smoked.
- Contains · Source: IARC Monograph 100E
One of the major volatile carcinogens in tobacco smoke.
- Contains · Source: IARC Monograph 100E
Combustion byproduct present in every cigarette smoke stream.
- Contains · Source: IARC Monograph 100E
Mainstream and secondhand tobacco smoke contain measurable benzene from incomplete combustion.
How to read this page
A factor appearing on this page means it has been documented in this product category — through EPA / FDA testing, IARC monographs, or regulatory recall records. Whether it presents a meaningful personal risk depends on the specific formulation, dose, and how you're exposed. Click any factor to read what science actually says about it, and where.