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Smelling Salts

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Smelling salts are designed to deliver a sharp, fast-acting sensory stimulus that can help increase alertness and focus before heavy lifts or intense training moments. Popular among strength athletes, they’re a quick and portable option to help you get mentally switched on when it counts.

What are smelling salts?

Smelling salts are ammonia inhalants. Briefly inhaling the vapour irritates the lining of the nose and lungs, which triggers a sharp reflex inhalation and a jolt of alertness. In a gym they are used immediately before a heavy single attempt, most often in powerlifting and strongman.

What they do is narrow and short lived. The effect is a reflex response lasting seconds, and there is little evidence that smelling salts actually improve strength output. What most users describe is feeling more alert and aggressive going into a lift. They are a psychological tool before a maximal attempt rather than a training supplement.

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Using them sensibly

Hold the container several centimetres from the nose rather than directly under it, inhale briefly, and keep the lid closed between uses. Never hold it against a nostril and never inhale repeatedly or deeply. The vapour is a respiratory irritant, and the strength of the reaction is the reason to be careful rather than a reason to use more.

Frequently asked questions

Do smelling salts make you stronger?

There is little evidence that they increase actual force production. What they reliably do is produce a jolt of alertness through a reflex response to the irritant. Most of the benefit people report is psychological arousal before a maximal attempt, which is not nothing, but it is not a strength supplement.

Are smelling salts safe?

Used briefly and at a distance, most healthy adults tolerate them. Ammonia is a respiratory irritant, so repeated or close range inhalation can irritate the airways and eyes. They are not suitable if you have asthma or any respiratory condition, and they should not be used by anyone under 18.

How should I use them?

Keep the container several centimetres away, take one brief inhale, and close it immediately. Do not hold it under your nose, do not inhale deeply, and do not use them repeatedly across a session. The sharp reaction is the point, and more exposure does not produce a better result.

Should I use them for every set?

No. They are intended for maximal attempts, not for general training. Repeated use through a session means repeated airway irritation for no real benefit, and the alerting effect diminishes with frequent use anyway.

When should I avoid them entirely?

If you have asthma, any respiratory condition, are pregnant, or are under 18. Also avoid them if you are recovering from a head knock, since the reflex response can mask how you actually feel, and anyone suspected of concussion needs medical assessment rather than stimulation.

Last reviewed: 10 October 2026