This happened in one AD&D campaign we played at one of my KainCon’s, I suspect in 2000 or 2001 looking at the style he had at the time. There was one room with a trap we ran into, and I forget if we had to choose our fate, or if it was random. Either way this legit happened, where Kain and I forget who else got attacked by a lot of these bitey fluffy white pillows. Kain was not amused, haha.
Armor helped reduce damage, Vorpal Sword helped turn them into confetti.