Which respirator is best? A respirator is a device you wear to protect you from inhaling dangerous substances. It’s also used to keep dust and particles from being inhaled when doing things like cleaning and painting. People who work around solvents and toxic chemicals protect their lungs by using respirators. If you are looking for a consumer-grade respirator that effectively blocks 97% of organic vapors, gases, fumes, pollen, dust and other airborne particles, try the KISCHERS Reusable Half Facepiece and Anti-Fog Goggle Set. What to know before you buy a respirator There are several different types of respirators, each designed for a specific purpose.