Canned Air, and similar cans of pressurized gas are sold in computer and general stores and used principally for the purposes of blowing a gas through a nozzle, (the long thin pipe), for example, between the keys of a computer keyboard in order to clear out dust and crumbs.  Unfortunately, some people inhale the gas to get a temporary high.  They do not realize it is dangerous because they mistakenly believe the can contains nothing but air.  This is wrong.  Like many pressurized containers it contains a propellant such as freon, a poisonous substance and sometimes other dangerous substances.  Keywords: Canned Air, Dust-off, Computer cleaner, computer blower, spray duster, blower, keyboard cleaner, Air-blower, inhalent, dangerous, poisonous, do not breathe, freon, pressurised gas, pressurised air, substance abuse.
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