Masks and oxygenation
Just in case people were still wondering about oxygenation while wearing a mask.
For you scientists, oxygen and carbon dioxide molecules are less than 0.5 nanometers in size, while viruses are closer to 20-200 nanometers. So yes, you could theoretically block viral particles and still breathe perfectly fine.
And while cloth and surgical masks don’t necessarily block ALL air and viral particles, they can decrease the radius of spread and block larger virus laden droplets from your nose and mouth.
So as we go into this holiday weekend , please be safe, wear your masks, and maintain physical distancing as best you can!
