I would skip the misting. I haven't done the experiment, but a lot of modern filter materials get some of their filtering power from a built-in electrostatic charge, and that may not work if it's wet.
This is one of the reasons why N95 masks are hard to clean/sterilize AND return them to the original effectiveness. You have to remove the water that has condensed on the fibers. Vacuum pump appears to be an effective method.
