When I was in boot camp and a recruit farted, the drill instructor would yell "turn on the air conditioners" and that meant everyone had to start breathing very deeply through their nose and blowing out their mouths. I believed that was funny till after the first time.
A childhood belief about farting

others believed things like this
- I used to think that a car boot sale was where motorists exchanged car boot lids.— Alan, Sheffield, UK
- i used to believe that if i looked at trees, the wind would start blowing. Anon
- That only men farted. I literally started sobbing the first time I realized I farted.Anon
- If I had bad gas I would sometimes start to run as I farted to escape the smell. It didn't always work.— Sammy
- My mom told me if you farted in bed your feet would turn brown.— Tracy
- We put food in our mouths, so naturally I believed my stomach was in my head.— Timb