Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. There are a few causes for a body odor and modern medicine is exploring devices and ways to detect and identify body odors associated to many health conditions. Usually, conditions related to hormonal and metabolic changes, diabetes, spicy foods, clothes made of synthetic fibers are the usual causes for body odors unrelated to increased sweating or lack of hygiene. A lesser known cause, which I think might be the case here, is aluminum chloride found in antiperspirants and deodorants. So you might want to reduce the amount and frequency of deodorant use. If you still do not think any of the above mentioned is a factor, then I suggest you see a doctor for a check up and complete health evaluation. Sometimes, a discreet unusual body odor can be a sign of something that requires medical attention. I hope this helps. Let me know if you have further questions. Wishing you all the best.