Respiratory protection is a field of research focused on developing and assessing methods and devices designed to protect individuals from inhaling harmful substances or particles that can be present in the air. This can include researching the effectiveness of various types of respirators, masks, and other forms of personal protective equipment in filtering out harmful contaminants. Additionally, researchers in this area may study the impact of respiratory hazards on human health and explore ways to improve respiratory protection strategies for workers in industries such as healthcare, construction, mining, and manufacturing. Overall, the goal of respiratory protection research is to prevent respiratory illnesses and improve the safety and well-being of individuals working in environments with potential airborne hazards.