36 hours isn’t even enough to fully empty your gastrointestinal system, so I doubt it’s related. Giving your body a break should actually be helping you clean out a bit, so definitely not something to go crazy over. Lots of people here do alternate day fasting full time, so a 36 hour fast isn’t anything to read too much into.
Lol. We just got off a 72 hour water fast and I just made this same comment to my SO. I rarely (I mean RARELY) ever farted before and I farted way more than I have this entire year in the past couple of days. My SO didn’t seem to think it was anything to be concerned about. Your gut biome has changed from the fast, so small changes are expected.