Why does your armpit smell like tomatoes?

The smell of tomatoes in your armpit could indicate bacterial infection or body odor. Body odour is a common issue that arises from the breakdown of sweat (which is naturally odourless) by bacteria that reside in the armpits. However, if the scent resembles tomatoes specifically, it could be due to a less common condition called trimethylaminuria (TMAU), also known as "fish odour syndrome". Individuals with TMAU experience a higher level of trimethylamine in their bodily fluids and sweat, resulting in a distinctive fishy or tomato-like smell. Typically, TMAU is caused by a genetic trait or certain dietary triggers. If concerned about any unusual smells, it's advisable to consult a medical professional for proper assessment and advice.