Fan death
is a widely held belief in South Korea that an electric fan left
running overnight in a closed room can cause the death of those inside.
Fans sold in Korea are equipped with a timer switch that turns them off
after a set number of minutes, which users are frequently urged to set
when going to sleep with a fan on.
No one seems to know why this belief persists, given that its position
as a medical condition is dubious. There is some speculation that it has
its origins in 1970s efforts by the South Korean government to curb
energy use. The natural tendency is to write it off as some kind of
crackpot belief.
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