Stabilizing the enzyme in fish odor syndrome Treatments of trimethylaminuria: where we are and where we might be heading ScienceDirect Trimethylaminuria: FMO3 mutations that cause malodorous body odor Get Rid of Fishy L Carnitine Smell: Essential Fixes Tonum Did You Know? Some people report a fishy smell after supplementing with L carnitine. This happens because certain gut bacteria convert carnitine to trimethylamine, a malodorous compound found in rotting fish. Frontiers The role of trimethylamine N oxide in disease pathogenesis and the therapeutic potential of traditional Chinese medicine