Polish Chief Sanitary Inspector advised that a mask can be made of a bra cup. I've seen photos of people in the street actually wearing it. Fetishists.
If the idea of boobs will get more men to wear masks, that's fine with me. : )
I am actually experimenting with a design where the mask has a finished, but open seam and (laugh) you can fit a light or medium thickness panty liner inside.) Absorbent side facing out, plastic shield side in. It will not be too bulky and will be more robust than a cotton fabric mask alone. The seam will then be closed with a few small metal snaps. After you get home from your trip to grocery store etc., dispose of the liner, wash the mask, and you are ready for the next trip. Deciding if it is a good design or not.
Ideally, this insert idea could become a good N95 type material that could be produced in strips and used in this way, offering a different approach to the mass production of actual masks. Faster and more versatile maybe.
Those N95 masks may be effective, but they are very uncomfortable and are causing serious abrasions and raw patches on people who are wearing them all the time in hospitals, etc.)