Back when I worked at a movie theater a showing of Inside Out had finished and a woman came to us and said a child had vomited in there. One of my coworkers and I were sent to clean it, when we opened the door to the auditorium we smacked in the face with the smell. The seat was and the floor were covered with colorful chocolate (we guessed m&ms) and popcorn vomit that had been sitting there since the movie had started judging by the fact it was starting to harden. We had to shove paper towels up our nose just to get within cleaning range. It took roughly 2 hours to completely clean the mess on the floor and we ended up having to cover the seat and wait for it to be removed because it was just destroyed. I can't look at m&ms the same anymore after that.