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Smelling salts are a chemical compound that releases small amounts of ammonia gas, which essentially jump starts your bodyâs nervous system. The ammonia causes blood vessels in your nasal passages to expand providing an instant increase in oxygen to your brain meaning an instantaneous boost of alertness and power.
1 Ammonia is a toxic gas or liquid that, when concentrated, is corrosive to tissues upon contact. 2  Exposure to ammonia in sufficient quantities can be fatal. 3  One of the highest production-volume chemicals in the U.S., concentrated ammonia is used in manufacturing, refrigeration, and agriculture (as a fertilizer). Clear, colorless liquid under pressure. 2  DESCRIPTION: For the purposes of this card, ammonia refers to solutions that are 50% ammonia or greater, ammonia anhydrous, and ammonia anhydrous liquified, unless otherwise specified. 3  Ammonia is a toxic gas or liquid that, when concentrated, is corrosive to tissues upon contact.