TMA, TMAO and diseases

TMA is the molecule which is naturally occuring from rotten fishes: Typically, seafoods contain large amounts of TMAO. When fishes are dead, some microbes perform their decomposition leading to rotten fishes, with their characteristical and very unpleasant odor (to which humans are very sensitive): this is due to TMA resulting from the enzymatic conversion of TMAO by rotting microbes.