Vaginal epithelial dysfunction is mediated by the microbiome, metabolome, and mTOR signaling: Cell Reports L Carnitine in Autism Spectrum Disorder Encyclopedia MDPI Development and Application of a UPLCMRMMS Method for Quantifying Trimethylamine, Trimethylamine N Oxide, and Related Metabolites in Individuals with and Without Metabolic 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 Pharmacokinetics of L Carnitine : Clinical Pharmacokinetics Trimethylaminuria: Understanding and Treating Fish Odor Syndrome