Benzene
(Destroys ability to produce blood cells,
can cause leukemia; flammable; carcinogen )

"Cancer-causing chemical used to make everything from pesticides to detergent to gasoline." -- www.bbc.co.uk/worldservice/sci_tech/features/health/tobaccotrial/inacigarette.htm

"Benzene along with bezopyrene and butane are all hydrocarbons present because of pyrolasis [burning of tobacco]. These compounds are undoubtedly carcinogenic and - along with nitrosamines - are the most unpleasant toxicants. Generally speaking they are chemically quite inert but during the course of their transit through the body they get absorbed by the lungs and then transported to various organs, principally the liver, where they are metabolised and converted to compounds which we know are very reactive and toxic. Similarly the nitrosamines are formed chemically in the body. These substances were widely used as solvents at one time. Luckily that's all stopped now. They are without any doubt carcinogenic. It's difficult to take them out of tobacco smoke because they are not in tobacco, they are actually produced during the burning process. Other nasty substances are the oxides of nitrogen and sulphur and hydrochloric acid that can also be present. They are gases which can irreversibly damage the lungs to produce things like emphysema. Asthma has been shown to develop in children whose parents smoke." -- Professor Gorrod

Benzene is "used in making dyes, synthetic rubber." -- smokefreedom.net