This seems like something that should be true, but I think I remember seeing a Mythbusters episode where they decided it didn’t make a difference. That show was more about entertainment than science, so I wondered if there was a more rigorous study done? I’ve definitely seen splashes of water(?) come out from flushes so that alone seems to argue for closing lids.
Woah, cool video! I think this video deserves its own post. I just need to figure out which scientific community it is most relevant to … Physics? Epidemiology? Hmmm 🤔