In Korea, electric fans come fitted with timers. That’s a great feature, as it can help you save on the electicity bills. But that isn’t the reason why the fans come fitted with timers. No, the reason is very simple and utterly and completely ludicrous: going to sleep with a fan running in an enclosed space will kill you.
Hence, the timer. To shut down the whirling, spinning blades before the fan’s gentle wafting breeze leads to your death.
The electric fan death theory becomes even more implausible the more details are added. For example, how exactly it kills you. Perhaps spinning blades tear oxygen molecules apart. Perhaps the gentle breeze from the fan leads to massive and fatal heat loss. Possibly, a light, electrically driven breeze creates a vacuum over the sleeper’s mouth and his lungs explode.
It is entirely and absolutely bonkers.
Nonetheless, lots of Koreans hold a fervent belief in the deadly, albeit entirely implausible, power of the electric fan.