The first time I experienced bad odor (smelled like cow manure) I went to 8 Drs. none helped except I was given Antibiotics . The first helped a little, then another Dr. gave me one and it helped more. I think I took three or four over the course of six months and the odor disappeared completely for four years. The odor came back, this time I had a bad sinus infection and took ceftin for 10 days and the odor was gone for many years again. So, Antibiotics help, but everyone knows you can't continue to take Antibiotics or you'll end up with a host of other problems. But, there is some connection. I asked a few Drs. about this and none had an answer of course.