Fan Death Is Real
In Korea, there is an urban legend that has persisted to this day. Koreans believe that if you leave an electric fan on while sleeping with the windows and doors closed you could pass away. They believe that the fan will lower someone’s body temperature, causing hypothermia.
While it hasn’t been totally proven, all Korean fans have an automatic shutoff timer for what they believe to be a life-saving measure. Better safe than sorry, right?