What is it?

Trimethylaminuria is a rare condition characterized by the body’s inability to break down a chemical called trimethylamine due to a mutation in the enzyme which breaks it down. This chemical smells like a rotting fish, causing a very bad body smell.

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Signs & symptoms

Symptoms include fishlike odor from the breath, sweat, urine and reproductive fluids. Some conditions make the smell worse such as exerice, stress and menstruation in women.


Diagnosis is based upon findings from medical history and physical examination. Further evaluation may include a urine test, and genetic tensting.


There is no cure for the disorder, but people may reduce the odor by avoiding foods that contain choline such as egg, liver, kidney, beans, peanuts, peas, soy products and more.

☝️ This is not a substitute for professional medical advice. Please consult with your physician before making any medical decision.

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