We’ve got some expired N95 or N98 masks. Hubby used those when he mowed to keep dust/dirt/pollen/etc out.
He’s been using stuff like those in your post since. Loves them.
Thanks for your review. I just placed an order for them at Amazon. I previously purchased a different type that I intended to make a filter for. These worked great without the filter. I was surprised by how well I could breathe with them in - I have a deviated septum - never did get around to making the filter. Btw, the Amazon page for these mentions filtering out viruses too. :)