What's the worst bodily function someone's committed in your aeroplane? And when and why? Chundering doesn't count!
Many years ago, when I was first learning to fly, we had an instructor with the worst case of halitosis I've ever encountered. I nearly fainted every time he turned to me to speak. Thankfully he didn't last long with us; he finally got the push when he launched with another student into really filthy weather and had to divert to Luton to do an ILS down to about 200'.
TheOddOne