Sleep trivia:When people sleep, the sense of smell also "sleeps"

We often hear that in the event of a fire, many people are killed by smoke in their sleep, because people do not have an olfactory reaction while sleeping.

The most sensitive perception we have while sleeping is hearing, followed by touch.

Therefore, in order to prevent problems, it is recommended that you should install a fire detector. In case of fire, hearing can save you a life.