You don't say what kind of surgery you had. I have a similar problem, but I had stomach surgery for a perforated ulcer and they removed about 60% of my stomach and some small intestine. My bowel movements aren't too fragrant either. I don't know if there's anything that can be done about this problem, as I've been this way for over 30 years. I do take Metamucil on a regular basis and that seems to help some.