I recently stumbled onto this site about nasal sprays and saw that "An in vitro study conducted by scientists from Northwestern University and Utah State University concluded that components found within the Xlear nasal spray, particularly grapefruit seed extract and xylitol, were successful in statistically reducing the amount of SARS-CoV-2."

I bought some of this, and now after I come home from shopping, I wash my hands and spray my nostrils. I figure it can't hurt.

https://covid19.onedaymd.com/2021/05/bes....