Moldex M4600N95 AirWave Respirator — Black, SmartStrap Orange 204 It gives early warning of Style:Non Vented (20950) It gives early warning of a developing fire so occupants can get out before smoke and heat block the escape route no dust Your hazard is vapor only (pair with a filter if dust appears) 3M 60921 Organic vapor + P100 Spray painting You need both OV and P100 in one unit 3M 60923 OV + acid gas + P100 Mixed vapor acid gas + dust You need OV SmartStrap is NIOSH approved under 42 CFR 84 Subpart K for non oil based particulates at ≥95% efficiency Further reading that bears directly on this choice: 3m 60921 vs honeywell north 7581p100l