Ключевые слова: air, breathe, breathing air respirators, breathing mask, compressed air, danger, dangerous, emergency, equipment, fire, fire brigade, firefighter, hdr, hdri, help, help performance, latex, life, mask, material, oxygen, oxygen mask, oxygendeficient, protect, protection, protective mask, protective mask survive, ready to help, ready to use, rescue, respirator, rubber, safety, shortness of breath, smoke, survive,