Air Filter
Air filters retain particulate matter when contaminated air is passed through the filter material. Filters are generally made from plastic, glass, cellulose, or a combination of two or more materials. Since the filters cannot be cleaned and reused, and have a limited lifespan, cost, and disposability are key.[1]
Respirators, such as elastomeric respirators, powered air-purifying respirator, or filtering facepiece respirators require air filters to operate. A player character may choose to replace the filters in their respirator whenever they get drawbacks, necessitating that new filters be loaded in the respirator before it can be used again. Similarly, whenever the player character gets complications, the game master (GM) may require that new filters be loaded.