I have a friend who was stationed at a secret base in Pakistan back in the 60's.
Guess what they found in the dressing after 90% of the base came down with the squats?
Same happend to us in Thailand once.......a local vendor who ran a gedunk sold hot foil packs of Kao Pai aka Cow Pot for 25 cents. He got mad one day at a GI and decided to give all GI's the GI's. Problem was a few ROK marines also got sick and they took Pooh Chi for a one way ride across the Mekong...........
Killing the cook was an approved option back then.....
Stay safe !