What is the purpose of a PBE or smoke hood?

• A. To filter pollen from the air.
• B. To provide breathable air and reduce concentration of inhaled smoke for crew during firefighting and evacuation.
• C. To provide hearing protection.
• D. To act as a fashion accessory.

Answer: (B)

When smoke and toxic fumes fill a cabin, the immediate need is to provide clean air so the crew can breathe and act to evacuate passengers safely. A PBE (protective breathing equipment) or smoke hood is a self-contained air source that delivers breathable air to the wearer and creates a barrier between the airways and the surrounding smoke. This dramatically reduces how much smoke and hazardous gases the crew inhales, helping maintain their ability to think clearly and move people to exits. The equipment is designed for quick, short-term use—just long enough to get everyone out—rather than for long-term air supply. It’s not about pollen filtration, hearing protection, or fashion; it’s about enabling safe evacuation in a smoky, dangerous environment.