Hi there, Thanks for your query. From the information provided, your husband had apparently had acute gastritis with underlying indigestion, probably due to intolerance to some food or foods containing high sulfur content or high-gas-forming foods such as beans, legumes. The excessive foul-smelling gas/flatus and upper abdominal pain were part of the same disease. A course of Proton Pump Inhibitors + an amebicidal drug + Probiotics and digestive enzymes will relieve all symptoms. Consult your doctor and apprise him of my opinion. I am certain that he will agree with me, order tests if required, and- based on the reports- will prescribe suitable/modified treatment as advised. In case of any further queries, revert back to me THROUGH DIRECT PREMIUM QUERY (Paid), addressed to me personally. You will receive- almost immediately- my response in great details. If you find my response helpful and informative, do not forget an “excellent” (5-star rating) to my answer, to ENCOURAGE all doctors- engaged in social service- to render sound advice to the FREE queries. Fond regards and have a nice day Dr. Rakesh Karanwal