My feet seems to smells badly when it sweats.is there any underlying problem behind it?

Bromodosis: Having smelly feet is a common problem caused by a build-up of sweat/bacteria. It can usually be improved with some simple treatments and self-help measures. One of the best ways to prevent the bacteria multiplying is to practice good foot hygiene. Wash your feet every day, keep your toenails short and clean, and check the soles of your feet for hard, dead skin and remove it with a foot file. If you have a fungus, that can also cause bromodosis, so be treated for that if evident.