(Possession and Use of a Vapor Releasing Toxic Substance)
Huffing is against the law. It is against the law to knowingly breathe, inhale, or drink a vapor-releasing toxic substance. Common things that fit this definition are glue, spray paint, gasoline, etc.
There are regulations regarding the sale of inhalants. Using or selling these substances is regarded as a class 5 felony or a class 1 misdemeanor depending on the seriousness of the offense. (ARS 13-3403).