Are Smelling Salts Bad for You?

Smelling salts contain ammonia-based chemicals, and are used to help revive people who have fainted or are lightheaded. When inhaled, the chemicals in smelling salts cause nose and throat irritation as well as temporary increases in heart rate. While smelling salts are generally safe when used as directed, prolonged inhalation may result in permanent lung damage or death.

Smelling salts - Wikipedia

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