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 after a workout, usually the following day (about 12 hours later). 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. My 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 completely. But they re-occur when I exercise, even light exercise. I've been recently diagnosed with Hypothyroidism. I stopped working out for the last 10 days and have had no symptoms. I know that once I start back at the gym my symptoms will return. Any ideas as to what I may be experiencing? I am scheduled for an MRI next month. Bottom line: there is a direct correlation between me working out and these odd body odors.