The main reason why people may experience a fishy taste, smell, or burp when taking #fishoil is that they are not taking a high quality #fishoilsupplement. When it comes to manufacturing Do you or someone you love smell like fish? It could be Fish Odor Syndrome! #fishodorsyndrome #fishy #fishysmell #fishodor L Carnitine Side Effects & Safety: A Complete Guide The Science of Good Health Does Carnitine Cause Body Odor? Lume Deodorant Fish odour syndrome CMAJ 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.