So far, we’ve been advised to get the vaccine because everyone else is. Shave cream and saliva to seal the mask. Contact lenses. Special(and doubtless) expensive anti-fog glasses or goggles. Surgical masks. The vaccine and countless boosters. And my favorite, tape the mask to the bridge of your nose.
in my original post I parodied the many and (even more) over the top suggestions to the original post. Please forgive me. At times, my sense of humor is positively arid.
the real point here, I think, is that if the OP or any one else is so concerned about catching Covid, then I must agree with wagon driver and salty. Stay home, or fly solo. You’re not focused on flying the airplane. You’re handicapping yourself with uncomfortable physically confining remedies that can also affect your basic ability to communicate with others, in your plane, and with other aircraft and/or ATC.
flying airplanes is not particularly hard, unless we go out of our way to make it so. If we go “over the top” as yet another respondent suggested, then it can become a safety of flight issue.
KISS is a philosophy to live by.