• Acids
• Air pollutants (e.g., ozone)
• Anesthetics, general
• Anesthetics, local
• Carcinogens
• Chemicals
• Cleaning products
• Chlorination by products (e.g., chloroform)
• Combustion by products (e.g., cyanide and carbon monoxide)
• Dietary products and supplements
• Drugs
• Fluoride
• Greenhouse gases (e.g., carbon dioxide)
• Hepatotoxins
• Herbal preparations and extracts
• Herbicides
• Insecticides
• Isocyanates
• Medical devices (e.g., breast implants and IUDs)
• Metals
• Nephrotoxins
• Neurotoxins
• Paints
• Pesticides
• Polymers
• Radiation
• Sewer gases (e.g., hydrogen sulfide)
• Solvents
• Teratogens