This confirms a long-held fear of mine. I wasn't sure what exactly it might be... but I was always concerned with these face masks breaking down over time and

This confirms a long-held fear of mine. I wasn't sure what exactly it might be... but I was always concerned with these face masks breaking down over time and forcing me to inhale... something... Turns out what we're inhaling is far worse than I imagined. I thought maybe some plastic fibers or something like that... not a known carcinogen.