If you are looking for the scientific rationale behind universal mask-wearing, you certainly won’t find it now that the issue has become as political as guns, abortion, and taxes. We are now at a point where Canada’s chief public health officer is calling on people to wear masks when engaging in sexual activities and 19-month-old babies are being forced to wear them on airplanes. There is no rational thought in a political cult. But what did the governmental and scientific literature say on the issue before it became political?

….In other words, they knew that because the virions of coronavirus are roughly 100 nanometers, 1/100,000 the width of a hair and 1/30 the size of surgical mask filtrations (about 3.0 microns or 3,000 nanometers), surgical masks (not to mention cloth ones) do not help. This would explain why experience has shown that all of the places with universal mask orders in place for months, such as Japan, Hong Kong, Israel, France, Peru, Philippines, Hawaii, California, and Miami, failed to stave off the spread of the infection…

https://www.theblaze.com/op-ed/horowitz-lied-to-dramatically-about-masks