I also have been dealing with this sulpher/fecal breath. I have had issues with NAFLD and am scheduled for GB removal soon. I am an RN with 3 auto immune diseases. Doctors are clueless and think you are dramatic. You have to self diagnose everything and keep bugging them for tests. I have massive bloating after I eat and I don't think GB issues causes that kind of back up of a smell. It's definitely more of a liver issue, but it's hard even getting in to see people..