Its not interesting logic… its fact. Everyone knows viruses are mitigated by the air humidity.
The part they leave out is that when you go from 30% humidity to 50% humidity, it works very well.. but when you go much above 50… and it does nothing. Brief mask wearing is good in low humidity environments (<2 hrs). Note… that a mask goes to 100% humidity, and bacteria also loves 100% humidity. The kind that grows in cloth from your mouth is not the good kind to aspirate in large quantiites either.
Pic relevant