Final answer:
IDLH respirators include lightweight breathing systems with face masks and air bottles, enhanced by aerospace technology, and heat-resistant firefighter suits that protect against smoke inhalation injuries.
Step-by-step explanation:
Potential IDLH (Immediately Dangerous to Life or Health) respirators include devices developed with the assistance of aerospace technology, such as a lightweight breathing system comprising a face mask, frame, harness, and air bottle. These systems were originally designed by the National Bureau of Standards and feature materials developed by NASA for rocket casings. Aerospace technology transfer to civil applications has greatly enhanced safety equipment, including protective gear worn by firefighters to avoid smoke inhalation injury. Besides, specially designed masks, now weighing less than three ounces, protect individuals from facial injuries, and heat-resistant materials developed for the space shuttle reentry are used in firefighter suits for municipal and aircraft-rescue. Radio communications facilitated by NASA's circuit technology improvements are also vital for coordination during fire operations to increase safety and efficiency.