If youur bowel motility is affected there are the following causes of sulphur burps:
- Helycobacter pylori infection of the stomach
- Gastroparesis
- Small intestinal bacterial overgrowth.
Another possible cause is food poisoning with an intestinal parasite giardia.
There are tests for all above performed by a gastroenterologist.
For immediate relief of sulphur smell, you can avoid sulphur containing foods that are in general all animal foods except fish. For detailed list check:
http://www.medhelp.org/user_journals/show/16645?personal_page_id=801
I have had this for the last few years. Last summer, I decided I needed to lose weight and, on the advice of a friend who'd lost weight,I tried avoiding wheat. I didn't go full-on gluten free, or anything. Those foods marked "gluten free" almost always have way too many ingredients from the laboratory to be healthy, in my opinion. Anyway, for four months I stopped eating breads, pasta, crackers, cereals, etc...and, remembering that bread is hidden in a lot of foods like pizza, croutons, doughnuts... I not only lost 40 lbs, but I stopped having the dreaded diarrhea episodes that start with the rotten egg burps. Then I cheated a lot and ate a lot of wheat for two months, gaining back 12 lbs and starting again with the sulphur burps and diarrhea.
I've researched wheat and found that the modern hybrid of wheat that is in all our food is has as much as 50 times the gluten of naturally occurring wheat. I don't believe the human body is equipped to metabolize that much gluten, and I am beginning to believe that too much gluten in our diet is behind much of the obesity, diabetes, and heart disease suffered by modern cultures with industrialized food systems.
Avoiding wheat is worth trying.