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 sleeping inside. All fans sold in South Korea come with an automatic timer that turns the fan off after a certain number of minutes. Scientific consensus holds that fan death is a myth.

The genesis of this South Korean superstition is unclear. Some have speculated that the South Korean government created the idea of fan death as propaganda in order to curb the energy consumption of Korean households. This theory is based on the fact that reports of fan death first appeared in the 1970s. This coincided with the 1970s energy crisis, which led to a short supply and high prices of oil; it also coincided with the rule of President Park Chung-hee, who listed attaining a self-reliant economy and modernization as his top goals, as announced in his Five Year Economic development Plan.”
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