Tobacco smoke in an Irish pub before a smoking ban came into effect on March 29, 2004
A woman smoking a cigarette, the most common method of tobacco smoking
Smog in Cairo. Particulate air pollution, including smog, is a substantial cause of human exposure to PAHs.
Aztec women are handed flowers and smoking tubes before eating at a banquet, Florentine Codex, 16th century.
Crude oil on a beach after a 2007 oil spill in Korea.
Gentlemen Smoking and Playing Backgammon in an Interior by Dirck Hals, 1627
An 18th-century drawing of chimney sweeps.
Bonsack's cigarette rolling machine, as shown on U.S. patent 238,640
An adduct formed between a DNA strand and an epoxide derived from a benzo[a]pyrene molecule (center); such adducts may interfere with normal DNA replication.
A lengthy study conducted in order to establish the strong association necessary for legislative action (US cigarette consumption per person blue, male lung cancer rate brown)
Naphthalene
Tendu Patta (Leaf) collection for Beedi industries
Biphenyl
A graph that shows the efficiency of smoking as a way to absorb nicotine compared to other forms of intake.
Fluorene
Sigmund Freud, whose doctor assisted his suicide because of oral cancer caused by smoking
Anthracene
Common adverse effects of tobacco smoking. The more common effects are in bold face.
Phenanthrene
Skull with a burning cigarette, by Vincent van Gogh.
Phenalene
An enclosed smoking area in a Japanese train station. Notice the air vent on the roof.
Tetracene
Chrysene
Triphenylene
Pyrene
Pentacene
Perylene
Benzo[a]pyrene
Corannulene
Benzo[ghi]perylene
Coronene
Ovalene
Benzo[c]fluorene
Phenanthrene
Anthracene
Chrysene
The Cat's Paw Nebula lies inside the Milky Way Galaxy and is located in the constellation Scorpius. Green areas show regions where radiation from hot stars collided with large molecules and small dust grains called "polycyclic aromatic hydrocarbons" (PAHs), causing them to fluoresce. (Spitzer Space Telescope, 2018)
Two extremely bright stars illuminate a mist of PAHs in this Spitzer Space Telescope image.

Tobacco smoke is a sooty aerosol produced by the incomplete combustion of tobacco during the smoking of cigarettes and other tobacco products.

- Tobacco smoke

Tobacco smoking is the practice of burning tobacco and ingesting the smoke that is produced.

- Tobacco smoking

Tobacco smoke contains a number of toxicologically significant chemicals and groups of chemicals, including polycyclic aromatic hydrocarbons (benzopyrene), tobacco-specific nitrosamines (NNK, NNN), aldehydes (acrolein, formaldehyde), carbon monoxide, hydrogen cyanide, nitrogen oxides (nitrogen dioxide), benzene, toluene, phenols (phenol, cresol), aromatic amines (nicotine, ABP (4-Aminobiphenyl)), and harmala alkaloids.

- Tobacco smoke

Lower-temperature combustion, such as tobacco smoking or wood-burning, tends to generate low molecular weight PAHs, whereas high-temperature industrial processes typically generate PAHs with higher molecular weights.

- Polycyclic aromatic hydrocarbon

In industrial countries, people who smoke tobacco products, or who are exposed to second-hand smoke, are among the most highly exposed groups; tobacco smoke contributes to 90% of indoor PAH levels in the homes of smokers.

- Polycyclic aromatic hydrocarbon

In addition to the aforementioned toxic chemicals, flavored tobacco contains flavorings which upon heating release toxic chemicals and carcinogens such as carbon monoxide (CO), polycyclic aromatic hydrocarbons (PAHs), furans, phenols, aldehydes (such as acrolein), and acids, in addition to nitrogenous carcinogens, alcohols, and heavy metals, all of which are dangerous to human health.

- Tobacco smoking
Tobacco smoke in an Irish pub before a smoking ban came into effect on March 29, 2004

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