Claim: Blue surgical masks are sprayed with PTFE, which is harmful to humans.
Fact-check: PTFE in masks does not pose a health risk, unless you get it very hot - Full Fact
Verdict: some masks contain ptfe, but ordinary surgical masks are often made from other materials. ptfe is not generally harmful to humans.
Organisation: Full Fact
Author: Rachael Krishna
Date published: 2020-10-26T00:00:00