Alex Jones gives his thoughts on masks (Picture)

 

Also these filters do not simply act like nets. Brownian motion causes them to catch more particles as they get smaller. Van Der Waals forces also plays a role. https://multimedia.3m.com/mws/media/376179O/nanotechnology-and-respirator-use.pdf "Filtration efficiency due to Brownian diffusion increases as particle size decreases. Once the particle is collected onto a fiber, it will adhere to the filter fiber due to Van der Waals forces."