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 safeguard 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 protection. Respirators are essential for workers exposed to airborne contaminants, as they help reduce the risk of respiratory illnesses. Proper fit and usage are crucial for effectiveness, and users must be trained on how to wear and maintain their respirators. Regular inspections and replacements are also necessary to ensure optimal performance.