It is so embarrassing. After I have a bowel movement the smell lingers. Especially,When I eat sweats the odor is really foul smelling and lingers. I bathe twice a day, washes up after every bowel movements and it does not help. I tried using perfume to cover it up, oh it is so embarrassing. My doctor ran all types of test and found nothing. No disease, no infection, what can I do?