Does Carnitine Cause Body Odor? Lume Deodorant Does Carnitine Cause Body Odor? Lume Deodorant 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: Benefits, Uses, and Side Effects Lifespan Research Institute Fish Odor Carnitine TikTok Will this make you smell like fish?! Pcos