Body odor decoded! A skin resident bacteria, Staphylococcus hominis, transforms sweat gland metabolites into sulfur containing compounds associated with body odors like those from onions via a two step process. In a recent Journal of Trimethylaminuria: Definition, symptoms, and more Stabilizing the enzyme in fish odor syndrome L carnitine supplements can cause a fishy odor in the breath, sweat, and urine. This is likely due to the formation of trimethylamine (TMA). TMA is also responsible for the pungent smell of