Got to admit “dr” doesn’t mean expert in the field they’re discussing.
the virus is in the micron sizing, any mask has to be near impermeable to stop it entering the mouth?
it’s when in droplet suspension as we exhale the mask is effective… and probably work better when wet from a little sustained wearing
like vehicle air filters work better with a small amount of contamination, plugging the gaps in the material
but, from the day we were ordered to wear masks… the “cases” went up… coincidence… or we’re re-breathe polluted particles?
you wouldn’t wear one of these blue, or any mask you see on people… if you were working with the gas from PVC welding…
look at the massive range of particle filters and specialist masks for specific substances…
when you consider the sixe of the virus is countless times smaller than smoke… down to the PM2.5 scale. the simple mask just isn’t going to stop a virus as an aerosol gas?
certainly, any face covering should help reduce spatter and larger moisture particles of breath exhaled,
dilute that particle in free air… how good is a mask with a weave like a football net to catch a grain of rice?
There is so much “info” and “disinformation”.
we have to see these videos and decide for ourselves if any of it makes sense?
no matter what title the person has delivering it?
nice to have a reasoned and friendly discussion about this
cheers