In petrol fumes, there are,carbon monoxide,
soot,oil vapor,&lead. Others are:- smog (fog+smoke) (can be occasional, found in the atmosphere),CFCs (Chlorofluorocarbons ), produced by aerosol sprays and air conditioner coolants,Sulphur dioxide,Suspended particulate matter(SPM),
lead halides particulate matter,
polynuclear aromatic compounds and polunuclear aromatic compounds(hydrocarbons),
asbestos particles, etc.