Updated October 2026
Are Smelling Salts Bad for You? The Honest Answer
Occasional use by a healthy adult appears low-risk — a brief sniff triggers a short reflex and most people feel nothing worse than stinging eyes. But the full answer has real caveats: the FDA has received reports of seizures, fainting, and breathing problems from these products, declared them unapproved drugs in August 2024, and the modern habit of frequent gym use is essentially unstudied. Here is the sourced breakdown.
What are the actual risks?
Airway and membrane irritation
Ammonia is a direct respiratory irritant. The FDA's 2024 warning notes that inhaling it quickly leads to coughing, airway constriction, and eye, nose, and throat irritation. That is not a side effect — irritation is literally how the product works.
Reported adverse events
The FDA has received consumer reports of shortness of breath, seizures, migraines, vomiting, diarrhea, and fainting after using alertness-marketed ammonia inhalants. Reports are not proof of causation, but a regulator naming them in a public warning is a meaningful signal.
Masking symptoms that need attention
The sharpest sports-medicine concern: the jolt can make a dazed athlete look and feel alert. Using salts to “shake off” a hit risks masking concussion symptoms and returning to play when the right move is assessment.
Repeated-exposure unknowns
The classic fainting-revival use was rare and brief. The modern gym pattern — strong sniffs, session after session — means repeated deliberate irritant exposure, and there is little research on what frequent long-term use does. Absence of data is not evidence of safety.
The regulatory record, in plain language
- 2008: an FDA proposed rule determined ammonia marketed as a reflex stimulant is not generally recognized as safe and effective.
- May 2023: FDA warned consumers about Nose Slap and Soul Slap alertness inhalants.
- March–April 2024: warning letters went to Skull Smash, Ammonia Sport, Ward Smelling Salts, and others, calling their products unapproved new drugs.
- August 6, 2024: FDA issued a blanket consumer warning against inhalants marketed for alertness and energy, naming seven brands and listing the reported adverse events.
Primary sources: FDA consumer warning (Aug 2024) · Ammonia Sport warning letter (incl. the 2008 GRASE determination)
So should you use them?
If you are a healthy adult who wants an occasional pre-lift jolt, the honest reading of the evidence is: probably fine, no proven performance benefit, keep the bottle at a distance, and never use them to push through a head knock. If you have asthma or reactive airways, skip them entirely.
If what you actually want is a repeatable daily reset — before work, on a commute, mid-afternoon — an irritant-reflex product is the wrong tool. That niche belongs to menthol inhalers, which is what half of Thailand carries in its pocket. (Disclosure: we sell one.)
Your questions, answered directly
Are smelling salts bad for you?
For a healthy adult taking an occasional brief sniff, the evidence suggests low risk — the effect is a short reflex and most users experience nothing worse than watering eyes. The honest caveats: the FDA has logged reports of seizures, fainting, and breathing problems from these products, ammonia is a genuine airway irritant, they are unapproved drugs when sold for alertness, and frequent long-term use is simply unstudied.
Are smelling salts FDA approved?
No. In August 2024 the FDA explicitly warned consumers not to purchase or use ammonia inhalants marketed for alertness and energy, calling them unapproved drugs, and sent warning letters to seven brands including Ward, Skull Smash, and Nose Slap. An FDA proposed rule from 2008 had already determined ammonia reflex stimulants are not generally recognized as safe and effective.
Can smelling salts damage your brain or nose?
A brief sniff at arm's length delivers a small ammonia dose, and there is no good evidence of lasting harm from occasional use. Concentrated or prolonged ammonia exposure, however, is well documented to burn mucous membranes and airways. The practical risks are closer-range, deeper sniffs, and habitual use — dose and frequency are the whole game.
Are smelling salts safe before lifting?
Thousands of lifters use them without incident, and leagues don't ban them. The two honest cautions: studies have not shown a real strength benefit (the effect is arousal, not power), and anyone with asthma or reactive airways is sniffing a known bronchoconstrictor trigger. If a hit to the head is involved — combat sports, football, hockey — salts should never be the way you “clear the cobwebs.”
Are smelling salts addictive?
Not chemically — there is no absorbed stimulant. But the ritual can become psychologically sticky: the pre-set sniff becomes a trigger you feel you need. That matters mainly because it multiplies total exposure to an irritant with unstudied long-term effects.
What can I use instead of smelling salts?
If you want the sensory snap without the ammonia, menthol is the established alternative: it fires cold-sensing TRPM8 receptors rather than working by irritant shock. Thai herbal inhalers (yadom) — menthol, camphor, eucalyptus in a pocket stick — are designed for exactly that repeated daily reset. Disclosure: we sell one; our comparison guide is honest about when ammonia's intensity is what you actually want.
Educational content, not medical advice. If you have a respiratory condition or take a blow to the head during sport, talk to a medical professional — not a bottle.