Post #780: Making an aerosol-filtering respirator from a dust mask and Filtrete (r) 1900

This post shows one way to upgrade a common dust mask so that it filters aerosol-sized particles.  The basic idea is not exactly rocket science:  Cover it with something that filters aerosol-sized particles. Continue reading Post #780: Making an aerosol-filtering respirator from a dust mask and Filtrete (r) 1900