I had fecal breath odor for YEARS. Talked to many doctors who I am sure thought that I was crazy....I finally had an upper endoscopy from a gastroenterologist surgeon at a major medical university on the west coast. She took biopsies from my esophagus where she noticed "reddish, juicy areas" (as she described them) and had them analyzed. Turns out that I have had an esophageal infection for YEARS,,, it was the bug called Serratia Marcescens,,, she put me on a 3 month duration of Bactrim DS (double-strength)antibiotic....had me crush and gargle the pills because taking them whole didn't cure the infection at first....Post this everywhere you know to help people!! thanks..... PS here is a website with information on Serratia Marcescens: http://www.serratia-marcescens.org/treatment.cfm