The filter won’t help if the vapors from the paint carrier are flammable. I.e. an organic solvent based lacquer. The filter may trap all the solid/liquid paint, but it won’t trap the vapors, which are still flammable.
BTW, I did some more checking of the flammability of windshield fluid. All of this was done on my concrete driveway, so as not to burn my garage down if something went awry. I soaked a sheet of newspaper in the fluid and tried to ignite it with a propane torch, nothing. I then filled a little spray bottle with some fluid and sprayed a cloud of fluid in the air - still nothing. So, though the stuff is combustible, it’s pretty darn hard to light off.
Some online searching found some key data. Windshield fluid (33% methanol) has a flash point of 98degF. I.e. the liquid would need to be at 98degF to form an ignitable mixture with air. In contrast, 100% methanol has a flash point of just 55degF. (Flash point goes up as the water percentage increases). FWIW, lacquer thinnner has a flash point of 42degF, acetone -4degF, and gasoline has a flash point of -40deg (which is good for those of us who need to drive in cold climates!)
Again, be CAREFUL!