The following is a list of known toxins in cigarettes, a product that is "approved" by the FDA and Governments worldwide, all of which are NOT associated with the electronic cigarette products, that the FDA has "banned" for use by the consumer:

Agent	Toxic	Ciliotoxic	Carcinogenic	Co-carcinogenic / Promoter
Carbon Monoxide	x
Nitrogen Oxides (NOx)	x
Hydrogen Cyanide	x	x
Formaldehyde		x	x
Acrolein		x
Acetaldehyde		x
Ammonia	x
Hydrazine			x
Vinyl Chloride			x
Urethane			x
2-Nitropropane			x
Quinoline			x
Benzo[a]pyrene			x	x
Dibenz[a,h]anthracene			x	x
Benzo[b]fluoranthene			x	x
Benzo[j]fluoranthene			x	x
Dibenzo[a,h]pyrene			x	x
Dibenzo[a,i]pyrene			x	x
Dibenz[a,j]acridine			x	x
Indeno[1,2,3-cd]pyrene			x	x
Benzo[c]phenanthrene			x	x
Benz[a]anthracene			x	x
Benzo[e]pyrene			x	x
Chrysene			x	x
Methylchrysene			x	x
Mehtylfluoranthene			x	x
Dibenz[a,c]anthracene			x	x
Dibenz[a,h]acridine			x	x
Dibenzo[c,g]carbazole			x	x
Mehtylnaphtalenes				x
1-Methylindoles				x
Dichlorostilbene				x
Catechol				x
3-Methycatechol				x
4-Methycatechol				x
4-Ethycatechol				x
4-n-Propylcatechol				x
Nitrosodimethylamine			x
Nitrosoethymethylamine			x
Nitrosodiethylamine			x
Nitrosodi-n-propylamine			x
Nitrosodi-n-butylamine			x
Nitrosopyrrolidine			x
Nitrosopiperidine			x
Nitrosomorpholine			x
N’-Nitrosonornicotine			x
4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone			x
N’-Nitrosoanabasine			x
N’-Nitrosoanatabine			x
Aromatic Amines			x
Aromatic Nitrohydrocarbons			x
Polonium-210			x
Nickel			x
Arsenic			x
Cadmium			x

If you disagree with the decision to ban the electronic cigarette ... I'd like to invite you to go to the Regulation of Tobacco Products comment page and voice your opinion.