In a study of 12 face masks, every mask contained titanium dioxide (TiO2) particles in at least one layer, at levels that “exceeded the acceptable exposure level.” The International Agency for Research on Cancer classifies titanium dioxide as a Group 2B carcinogen, which means it is “possibly carcinogenic to humans” by inhalation. A meta-analysis called for a rethinking of nano-TiO2 safety, citing numerous toxic effects in humans and aquatic animals. https://expose-news.com/2022/10/27/face-masks-contain-cancer-causing-titanium-dioxide/