If the mask is so porous, how does it reduce oxygen intake (hint: it doesn't)?
There's no doubt the Left is making every effort to politicize every aspect of Covid-19 (starting with the name, vs. China virus) -- why is the Right rising to the bait, and making a political issue of mask-wearing? The Left baited a trap & you're accommodating them, by waltzing right into it.
Seriously. Basic physics. Do you have any idea how small 1.5 micron is? Do you think covid is the only nasty little germ out there floating in the air; especially in people filled spaces. They come in all kinds of sizes. The pores of the mask do fill up rendering them even more useless and harmful in no time at all. Twenty minute max. The amount of air you intake goes up as you work harder and walk more as the pores clog up decreasing your oxygen intake. I shouldn't need to explain basic common sense.
As for taking the bait; reacting to a propaganda message and insolent governors who insist on taking away our freedoms is a vital part of fight back against this nonsense.
Would you rather we all just mewed along like sheep? No thanks. Sheeple behavior has never been my style.
"Filtration theory of particulate removing respirators is well understood and has been extensively described.4,5 For particles smaller than 100 nm, diffusion is the dominant removal mechanism. Brownian diffusion is caused by collisions between particles and air molecules. The resulting random motion increases the probability of a particle contacting one of the filter fibers. 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. "
https://multimedia.3m.com/mws/media/376179O/nanotechnology-and-respirator-use.pdf
The masks are actually more effective against virus-sized particles than they are against slightly larger particles.