A respirator is a protective device designed to cover the nose and mouth, filtering out harmful substances from the air. It is commonly used in various settings, such as construction sites, hospitals, and laboratories, to protect users from inhaling hazardous particles, gases, or vapors. Different types of respirators exist, including N95 masks and full-face respirators, each suited for specific environments and levels of exposure. Respirators are essential for ensuring safety in workplaces where airborne contaminants are present. They work by using filters or cartridges to trap harmful particles, allowing the wearer to breathe clean air. Proper fit and usage are crucial for effectiveness, making training and regular maintenance important for users.