I’ve seen a mass hysteria event in an office environment several time. One person throws up and all of a sudden another does and pretty soon you’re taking 15 employees to the hospital. Environmental test results show nothing.
Exactly, plus the smell of vomit often causes nausea and vomiting in it’s own right.
Chain puking reaction.
Mass hysteria, I agree.
I’ve read about these mass hysteria sickness events, and that was my first thought.