They just told us that smoke particulates are too small to be stopped by a cloth mask. While N95 masks will protect up to 95% of particles, down to .1 microns in size. A quick Google search will tell us that smoke particles and debris are usually .4 to .7 microns in size. According to the CDC, cloth masks are not effective in stopping materials that size.
Another quick Google search will tell us that the Wuhan Virus is .12 microns in size, about a quarter in size of the smoke and fire debris particulate. Even if we factor for the “respiratory droplets” that are allegedly to blame for the spread of coronavirus, those droplets are as small as .5 microns, or as small or smaller than smoke and fire debris particulate. These factors and figures aren’t hidden in some CDC vault that only their scientists are capable of accessing. Yet another quick Google search will show these figures within seconds.
The CDC cannot, on one hand, demand we wear masks because of the prevention of the spread of a disease (or droplets containing the disease) and then tell us that those same masks are ineffective in stopping particles that are bigger than the disease we are trying to prevent.