Chemical:
1,3-Butadiene, Acetaldehyde, Acrylonitrile, Benzene, Benzo[b]fluoranthene, Benz[a]anthracene, Cadmium, Carbon monoxide, Dibenzo[a,e]pyrene, Dibenzo[a,h]pyrene, Dibenzo[a,i]pyrene, Dibenzo[a,l]pyrene, Formaldehyde (gas), Lead, Lead and lead compounds, Nickel, Nicotine, Toluene, Unleaded gasoline (wholly vaporized)