Odor/Particulate Reusable Respirator Click HERE for more information! NIOSH-APPROVED OV CARTRIDGE WITH P100 FILTER filters at least 99.97% of solids and liquid aerosols as well as certain organic vapors. OIL RESISTANT P-series particulate filter. ODOR REDUCTION for use with certain non-harmful sprays/vapors from stains, varnishes, coatings and sealants.