If you were or continue to think that masks are good, please read..and better yet, educate yourself and get some common sense.
Oxygen is good. Breathing in your own bad breath is not good.
https://www.theepochtimes.com/health/masks-cause-headaches-itching-and-lower-oxygen-intake-study_5181866.html?src_src=Goodevening&src_cmp=gv-2023-04-10&est=io2%2Bz5ASsBgZO2XZIbslQOqKJ6G0v2pbFXPspB9jQdk6N6hYS9fYCU0Ulm2xRXnmOt9pjQ%3D%3D
