Carbon Monoxide
Carbon monoxide (CO) This is mainly caused by irritating gases like formaldehyde ( H2C=O ) and ammonia ( NH3 ) C=O is tasteless, odorless, though very poisoness but nonirritating.
tobacco
Adult Poison dart frogs breath through their skin and lungs
Yes
It is not "put" there, it is part of the plant (or rather the plants combustion products). Its effects are to poison the smoker and it causes cancer.
Yes.
Nicotine witch causes addiction and can kill you
the stuff in your moms breath
Nicotine is found in tobacco, as well as in certain herbicide and insecticides.
lead, rat poison, and tar
Tobacco contains nicotine, a poison. It can kill animals that eat it, or make them very sick.
Adult Poison dart frogs breath through their lungs and skin. Tadpoles use gills.