Older
slang term for Amyl or Butyl nitrate, which used to be sold in sex shops, so-named probably because some
people find the chemical has an odor slightly akin to dirty socks. Also called "rush" or "popper." The chemical causes a sudden and dramatic expansion of the blood vessels, creating an intense rush, often followed by a feeling of light-headedness. Often used at raves, and in dancehalls/discos. Very
popular with gay
men, to increase the intensity of the orgasm. Amyl or Butyl nitrate used in conjunction with
drugs intended to correct erectile dysfunction (e.g., Viagra) is potentially fatal.
Amyl nitrate by inhalation (in appropriate quantities, and administered by a physician) acts as an antidote for cyanide poisoning, by causing the
body to produce methemoglobin which combines with the cyanide to form nontoxic cyanmethemoglobin.