The main reason some people may experience a fishy taste, smell, or burp when taking fish oil is that they are not taking a high quality #fishoil supplement. When it comes Carnitine Deficiency: What Is It, Causes, Symptoms, and More Osmosis Do you or someone you love smell like fish? It could be Fish Odor Syndrome! #fishodorsyndrome #fishy #fishysmell #fishodor L carnitine supplements can cause a fishy odor in the breath, sweat, and urine. This is likely due to the formation of trimethylamine (TMA). TMA is also responsible for the pungent smell of