We had amyl nitrite ampules in little cyanide emergency boxes on the wall. Used in the event of poisoning.
The procedure was basically.."if you taste almonds, you have seconds to break the vial and inhale or you die"

Amyl Nitrite is also a controlled substance, a drug known to be abused---recreationally.

I remember Todd, telling everyone after a box was broken into, that he tasted almonds!

I also remember plating the common gold fingers on boards in a humid, smelly room. Nasty job.