Checked elsewhere / PolitiFact / Health

“CDC announces that ordinary (non-N95) masks (which most people are wearing) will do nothing to protect you against wildfire smoke … Fun fact: smoke particles are far larger than SARS-CoV-2 particles.”
Social media posts Claim dated 11 Sep 2020.
PolitiFact rated thisFalse

What PolitiFact found

For COVID-19, cloth masks are used as a form of source control to help stop virus spread and are meant to protect others by blocking the wearer’s coughs or sneezes, not to protect the wearer from tiny viral particles.

Their words, from the summary they publish with the rating.

In short

This claim spread on social media around 11 September 2020. PolitiFact (United States) looked into it and published its finding on 14 September 2020, 3 days later. Its rating was “False”.

This check was done by PolitiFact, not by DoesItStand. We list it so you can find it. Their full evidence and reasoning are in their article.