Green says masks will be last to go

[MyManao]

For the exhalation valve there is a separate filter available..

Talk about getting you on the backside, them buggah's are pricey..

For the exhaust port on my reusable 3M masks, I have both full face and half, I use a non-woven type cloth I've been using to make the disposable inserts some of the cloth masks I've worn have provided for. It works pretty good. Inside the mask there are two rubber studs sticking up, from the check valve assembly in the exhaust port, that I make holes in the cloth for, and it slips over those and stays in place without any other finagling.

As to the importance of arguing masks to the public discourse.. it's nice to see you back ironyak!