Mask pore size and the size of coronavirus.
An interesting graphic I found of the average mask pore size, and the size of a typical coronavirus. Many agencies don’t want you to know this. I didn’t make this graphic, I just found it.
By “disposable” mask I assume they mean the surgical masks.
More studies that show masks cannot stop viruses. They work well for stopping bacteria but only for about 2 hours then effectiveness drops significantly. https://wordsalad.info/tag-masksdontwork.html