It can be something unusual on public transportation, or even an odd encounter with your neighbor. I would love to hear your stories!
I’ll go first- in my neighborhood, there are city bikes which you have to rent (pay) in order to use. One day I was passing by the bike racks and there was a man using a locked bike as a stationary bike. He was wearing workout clothes and was incredibly sweaty. All of a sudden, he stops and lets out the loudest and longest fart I’ve ever heard. He even wafted it. After that, I’ve never used those bikes again.