Replying to @Bek I'm still going to my appointment to be on the safe s l carnitine fishy odor TikTok Does Carnitine Cause Body Odor? Lume Deodorant Get Rid of Fishy L Carnitine Smell: Essential Fixes Tonum L Carnitine for Weight Loss: How It Works, Dosage & Best Supplement Zeelab Pharmacy L Carnitine (Orange) Outlastlabz 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.