Long-term use can damage the brain and other body organs. Other risks derive from how fast solvents are absorbed when they're inhaled. Effects hit immediately, but so can overdose, without a gradual onset of warning signs. Sudden shock or exertion after sniffing can also trigger heart failure. Aerosol Sprays .
Aerosols pose a different, but equally-lethal danger.
In this case, the intoxicating chemical is the propellant used to make hairspray or cooking oil or deodorant spray out of the container, and it usually produces only a brief high. These include chemicals like amyl, butyl, and cyclohexyl nitrite and nitrous oxide. The nitrites produce a very short, dizzying high that lasts a minute or two. When inhaled, nitrites are considered less toxic than other inhalants, but they can be poisonous if swallowed. And, yes, kids have even tried that, too.