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Interesting. Some of that from the milk products sounds like me when O was freshly post-op and had some lactose intolerance. That eventually went away for me but a lot of gas to start with powdered and regular milk. Not so much for cheese and yogurt.
I find if I can get to a BM first I eliminate a lot of the gas issues. It's just the longer a high fat food is in my gut the more gas prone I am but I haven't really correlated the smell level. :)