In fact, fish-odor syndrome, or trimethylaminuria, results from an insufficiency of an enzyme that normally breaks down trimethylamine, a fishy-smelling molecule.

• 鱼腥症或称三甲基胺尿症的产生，是因患者身上缺乏一种酵素，所以无法正常分解三甲基胺，而三甲基胺分子闻来有鱼腥味。