Frontiers Role of Carnitine in Non alcoholic Fatty Liver Disease and Other Related Diseases: An Update Trimethylaminuria: Understanding and Treating Fish Odor Syndrome A recurring fishy odor could indicate a larger medical problem. JCI l Carnitine in omnivorous diets induces an atherogenic gut microbial pathway in humans Ever heard of Fish Odor Syndrome? Its a rare condition where the body cant break down trimethylamine a compound found in foods like fish, eggs, and beans. This leads to a strong, fish like smell