After my treatment for esophageal cancer finished, I had burping constantly it went on for a couple of years. I would warn whoever I was with that I would probably do it and not to think poorly of me! It has been several years now in my remission and I’m not doing the burping at all. By the way it didn’t matter what it was I was eating or drinking the burps/belches just came. None of my medical team thought there was anything bad about it, Also telling me there was nothing to worry about.