Scented naps can dissipate fears
People unlearned an odor's unpleasant accompaniment when they smelled it in their sleep
![sleeping girl](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2013/09/ls_Sleeping-girl_feat.jpg?fit=860%2C460&ssl=1)
Xiaphias/Wikimedia
People unlearned an odor's unpleasant accompaniment when they smelled it in their sleep
Xiaphias/Wikimedia