Two broad types of respirators are available: atmosphere-supplying respirators (ASRs) and air-purifying respirators (APRs). The former group includes airline respirators and SCBAs. Since these types of respirators provide clean breathing air to the user from a separate air source and typically have much higher protection factors (up to 10,000X depending on configuration), they would be acceptable choices. However, they probably would be overkill. It may not be necessary to choose such a cumbersome and expensive option.