I noticed that after I exercise, whether light or heavy, I develop a very strong, putrid body odor that has an earthy-musty smell or sometimes a "nail polish" smell. It is not the smell of regular BO. The smell usually occurs several hours later or the following day. And it usually lasts from 20 minutes to several hours. Yes, I shower, have good hygiene, don't seat excessively, and don't have anything in my nose! Symptoms also include being excessively hungry and thirsty. Tests for diabetes and liver disease have come up negative. These symptoms have been going on for approximately 8 months. I usually work out 5-6 days a week. When I stop working out for a day or two, the odors disappear. But they re-occur when I exercise, even light exercise. I've been recently diagnosed with Hypothyroidism. Any ideas as to what I may be experiencing? I am scheduled for an MRI. Bottom line: there is a direct correlation between me working out and these odd body odors.