Now that the CDC advises us to wear a mask when out in public, consider what is not being said, yet. You are told not to touch your face. They make it sound like once you have touched your face, there is no recourse. That is how the virus enters your body. But if you touch it and you are not doomed!
Wash your face with soap for 20 seconds. The same precaution that will kill the virus on your hands will kill it on your face. Suds up your face.
Suppose a virus has made it into your nose. Then, wouldn’t blowing your nose somewhat frequently, make sense as well? It’s a precaution, and we can use all the precautions we can get.