Inhalants are the most damaging of abuse substances.
They are abused chemicals that produce mind-altering vapors. The chemicals are sprayed or poured into a plastic bag and then the fumes are inhaled. Chemicals can also be poured into a rag and then inhaled that way. Many inhalants produce effects that are very similar to anesthetics causing sedation. Typically a sniffers high on average only lasts about 15 minutes to 1 hour.