Is L Carnitine Safe? Watch FIRST BEFORE Taking L Carnitine Supplements YouTube 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. L Carnitine: Everything You Need to Know Does L carnitine cause fishy body odor? Surprising Truth and Solutions Tonum Does L Carnitine Work for Fat Loss? A Dietitian Explains