The other issue is touching your face - most people touch their face 20 times/hour and once informed they're doing it, the frequency of touching increases (sorry about that). As someone who has a perpetually itchy nose and has always been a frequent sneezer, this is proving to be a difficult time.
https://www.livescience.com/why-hard...hing-face.html
One of the advantages of wearing a mask (for non medical professionals) is that it draws your attention to the fact you're touching your face. Maybe I need to wear my helmet all the time?