Some More Things On What Is In A Cigarette

Ethanol (Alcohol)
Formalin (used in preserving human tissue and fabric)
Hexamine (used in explosive compounds)
Hydrogen Cyanide (Poison)
Methane (Petroleum Gas)
Naphthalene (used in moth balls)
Nicotine (Schedule 6 Poison)
Nitro Benzene (a petrol additive)
Phenols (used in disinfectants)
Stearic Acid (used in candle wax)
Toluene (Industrial solvent)
Vinyl Chloride (used in PVC)

 Facts From <http://home.honolulu.hawaii.edu/~pine/Phil110/cig-contents.html>