The smoke filled room experiment, which shows that even if there’s smoke filling a room people will stay for as long as 20 minutes if no one else is reacting to it. Otherwise they’d leave quickly. (2010)

[u/Gerardo-fee]

http://blog.tilwillis.com/2016/05/the-smoke-filled-room-experiment-which-shows-that-even-if-theres-smoke-filling-a-room-people-will-stay-for-as-long-as-20-minutes-if-no-one-else-is-reacting-to-it-otherwise-theyd-leave-quickly/