Might want to start using nasal sprays like covixyl, xclear (xylitol), or betadine. There's not a lot of studies out there, but what studies have been done show a 60-80% effectiveness in stopping the virus. They all basically coat your nasal passage with a protective layer to stop the virus. Probably won't stop it if you are in a small room with someone shedding virus for a long time, but it should help your odds.
And bring a HEPA air purifier if you're going to someone else's home.
If you don't have access to nasal sprays or aren't comfortable with the quality of the evidence, you can also do a saline rinse after potential exposures to mechanically remove virions from your nasal passages.
Might want to start using nasal sprays like covixyl, xclear (xylitol), or betadine. There's not a lot of studies out there, but what studies have been done show a 60-80% effectiveness in stopping the virus. They all basically coat your nasal passage with a protective layer to stop the virus. Probably won't stop it if you are in a small room with someone shedding virus for a long time, but it should help your odds.
Also DIY fit test your mask if you haven't:
https://www.youtube.com/watch?v=TRCZ8Qnf0Z0
https://mathburritos.org/fit-test-kit-v1/
And bring a HEPA air purifier if you're going to someone else's home.
If you don't have access to nasal sprays or aren't comfortable with the quality of the evidence, you can also do a saline rinse after potential exposures to mechanically remove virions from your nasal passages.
I found a YouTube link in your comment. Here are links to the same video on alternative frontends that protect your privacy: