Garlic Breath

Garlic breath is a garlic-like odor on the breath caused by the metabolism of excess selenium. It is generally harmless but can be socially undesirable.

Garlic breath, medically known as bromhidrosis when systemic, is a noticeable odor emanating from the breath resembling garlic. In the context of selenium supplementation, it is believed to occur when the body metabolizes excess selenium, releasing volatile sulfur compounds (dimethyl selenide) that are then exhaled. While generally harmless, it can be socially undesirable.