One of my surprise delights about this surgery - WAY less farting that when I was fat! And way less smelly, when one does make an appearance. With exceptions - like some others have said, certain foods seem to affect me.
As to fart+ - or, as I think of it, fart-with-follow-through - yep, from time to time that is a reality, especially for me when I am eating out of routine. But if I am in routine, no problems...