What is the salt #(NH_4)_2CO_3#, and how was it used?
These used to be administered to ladies with the vapours in old fillums.......... Remember
Smelling salts also used to be administered to boxers who were having the bejesus beaten out of them, in the hope that the smell of the ammonia would revive them. And now I am thinking of old Anthony Quinn and Mickey Rooney in
Anyway, if you have ever smelled conc. ammonia, it is a noxious, powerful, and penetrating smell, and ammonia vapour is delivered by ammonium carbonate: