A rare metabolic disorder, known as Fish Odor Syndrome, prevents the body from properly breaking down trimethylamine (TMA). This results in the build-up of TMA, a chemical compound with a distinct fishy odor, which is then released through bodily fluids like sweat, urine, and breath. The condition is a genetic metabolic disorder impacting the body’s ability to process nutrients. While not life-threatening, the persistent and noticeable odor can cause significant social and psychological distress for those affected. Diagnosis typically involves testing for elevated TMA levels in urine. Management focuses on dietary adjustments to reduce TMA production and minimize the odor.