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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.
Ammonia is toxic to aquatic life and toxicity is affected by pond pH. Ammonia-nitrogen (NH 3-N) has a more toxic form at high pH and a less toxic form at low pH, un-ionized ammonia (NH 3) and ionized ammonia (NH 4 +), respectively. In addition, ammonia toxicity increases as temperature rises.