I can’t remember where I heard it, but some doctor was describing cloth and paper surgical mask effectiveness against Covid as “throwing a handful of sand at a

I can’t remember where I heard it, but some doctor was describing cloth and paper surgical mask effectiveness against Covid as “throwing a handful of sand at a chain link fence”. N95 masks are supposed to be more like a wall. Except nobody really wears those as the cost about $2 each and you are only supposed to wear them for 3-4 days with proper sterilization between uses.