Fan Death:
A common Korean superstition that has been present in South Korean culture for quite some was after the invention of the electric fan. A really random idea from a random person thought that having an electric fan running overnight in a closed room (doors and windows shut) could kill you by either suffocation or hypothermia. This phenomenon is known as, “Fan Death.” You might notice that the weather in Korea in the summer time is very hot and humid. So what’s a good way to cool off your naked body on a hot, humid summer day? Cooling yourself off with an electric fan, of course. The “Fan Death” superstition has become so popular in the Korean culture that companies who make fans started to incorporate timers in these electric fans so that you can set it to turn off by itself when you are asleep.