Is it really only extremely bad on days that you do wine tasting? If so, do you drink any of the wine? Wine can bother my pouch. Also have you searched online about swallowing air when you talk? I did a quick search and i don't know if it applies to you but it actually has a name. Aerophagia. It can happen if you are very nervous or if you don't breath correctly when you are talking. I would read up on it and think about what you read next time you are at work and see if notice anything. In the meantime, bulking agents like metamucil cookies can help with accidents. Most of us try to never pass gas unless on the toilet because it's very risky. Compared to a normal person we ALWAYS have diarrhea so leaks happen A LOT when trying to pass gas especially standing up. Gas-X can help if you have bloating and pain.
PS you should get an email when someone responds to a post as long as you have follow selected at the bottom of the text box (it seems to be the default)