I had dinner with a friend/colleague a couple of days ago. She is 60, and for decades was the devoted wife of a career military man. A registered nurse by training, she happily set aside her profession and assumed the role she felt was her highest calling. She continued to stand by her man even after it was painfully clear that her man was standing by someone else's side.
Apparently all of Italy knows, and has known for generations. If you live here long enough, you will know as well. A blast of air on your neck, throat, or head is the root of all illness. Because of it, an Italian would never leave the house without having the neck and throat area securely covered with a scarf.