There is a common belief in South Korea that falling asleep in a closed room with an electric fan running can lead to death. Cases of suspected fan death are sometimes reported by the media, and new fans are equipped with automatic timers as a precaution. Though fan death is technically possible, as the use of a fan can hasten dehydration and thus lead to heat exhaustion, the more popular ideas about how fans might kill people have all been debunked by science. What are some of those theories? Discuss