Hi, sorry to hear that you are still having pain. Un fourtunately, even a little bit of smoking will cause problems though. I feel your pain about giving up favorite things, I don't smoke but I LOVE coffee and chocolate and as you well know those things are bad for GERD patients. I think the surgery can be undone. Fortunately, the Nissen was a godsend for me and I was lucky enough to have a talented surgeon who did the surgery beautifully. There are good surgeons out there and I know they can re-do nissens also. Best of luck to you.