Frontiers A mixture of postbiotics tyndallized probiotics reduces trimethylamine (TMA) in trimethylaminuria models: Evidence from in vitro and in vivo studies Trimethylaminuria (Fish Odor Syndrome or TMAU) 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 Potential Adverse Effects of L Carnitine Marnys Frontiers Trimethylamine N Oxide Pathway: A Potential Target for the Treatment of MAFLD Trimethylamine N Oxide From Gut Microbiota in Chronic Kidney Disease Patients: Focus on Diet Journal of Renal Nutrition