Does Carnitine Cause Body Odor? Lume Deodorant How to Get Rid of Fishy Smell L Carnitine TikTok L Carnitine Avoid Fishy Smell TikTok Should I Take L Carnitine? NZProtein 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