⚠️In a study of 12 face masks, every mask contained cancer causing compound particles in at least one layer.
🔗Source (https://www.nature.com/articles/s41598-022-06605-w.pdf)
This also popped up:
https://www.nature.com/articles/s41598-022-23615-w
Evaluation of the antibacterial activities of face masks coated with titanium dioxide nanoparticles | Scientific Reports
To control infectious diseases, various applications of nanotechnology have been used to enhance the self-cleaning and antibacterial properties of materials. This study aimed to evaluate the antibacterial properties of face masks coated with TiO2 nanoparticles. The antibacterial efficacies of cloth ..
https://www.nature.com/articles/s41598-022-23615-w