Hi. Thanks for your query. Noted the history about a 38 year old woman having started with foul smelling gas all day and night for the last 3 days, is known to have constipation and hemorrhoid. Diet consists of morning smoothies, chicken, fish; wants to know whether need to see a Specialist or at least different diagnostics. The commonest cause of foul smelling gas is overgrowth gas producing bacteria, usually in colon. This can be cured by the following ways: Consult your Doctor. Send the stool and blood for tests. Get a course of an antibiotic active against intestinal/colonic infection, probiotics. Stop aerated beverages. Stop all the foods and beverages that are not freshly cooked at home.