I don't know if its related but I get uncontrollable hiccup spells on occasion when vaping.
Gassy Farty or Gassy Burpy? If it's burping you're doing you are just swallowing some vapor/air when you vape. If it's farty you are, then you are using your PV wrong8-o
I definitely get hiccuping and some bad belches if I hit my 36mg too hard in the morning, I'm sure it has to do with the nicotine causing that familiar 'throat tickle'. Yeah, there, I said it, I'm not too lady-like to admit it either. As far as excess flatulence, I'm with everyone else pegging the switch from analogs..didn't have it myself but I wasn't a 2PAD smoker either. You'd be amazed at what the body does while de-toxing, if you've ever drank a little too much it's probably a pretty similar effect, only more drawn out based on that list posted above.