Glantz (Glantz, 1991) cites cigarette smoke as a source of more than 4000 chemical air contaminants, including 43 known carcinogens. OSHA, in its Advanced Notice of Proposed Rulemaking, notes the presence of chemicals such as acrylonitrile, arsenic, benzene, lead, cadmium, formaldehyde, and vinyl chloride in tobacco smoke. For all of these chemicals, there is "sufficient evidence" of carcinogenicity in humans or animals. The concentrations of these dangerous substances may be tiny in tobacco smoke, but it should be noted that each of these chemicals is the subject of a separate OSHA air contaminant standard. What amazes me is how OSHA and other entities have published the severe dangers of smoking but yet they have not completely outlawed them. It would seem that someone is being paid somewhere or the US government just does not care as they claim. (My own opinions)by John Allen on TwosGlantz (Glantz, 1991) cites cigarette smoke as a source of more than 4000 chemical air contaminants, including 43 known carcinogens. OSHA, in its Advanced Notice of Proposed Rulemaking, notes the presence of chemicals such as acrylonitrile, arsenic, benzene, lead, cadmium, formaldehyde, and vinyl chloride in tobacco smoke. For all of these chemicals, there is "sufficient evidence" of carcinogenicity in humans or animals. The concentrations of these dangerous substances may be tiny in tobacco smoke, but it should be noted that each of these chemicals is the subject of a separate OSHA air contaminant standard. What amazes me is how OSHA and other entities have published the severe dangers of smoking but yet they have not completely outlawed them. It would seem that someone is being paid somewhere or the US government just does not care as they claim. (My own opinions)