5. Kidney Failure

Having fishy breath after a fishy meal is not exactly any concern, but if it persists, it might be time to consult a doctor. Breath that smells like a mixture of fish and urine, similar to ammonia, could be an indication of kidney failure.

As we know, the kidneys are in charge of getting rid of toxins and waste materials in the blood through urine. If they aren’t working properly, as in the case of kidney failure (aka end-stage renal disease), this function isn’t performed effectively. This means that waste material remains in the body and ends up affecting almost every part of it. The respiratory system could also be harmed, and that’s how you get fishy breath.