Ключевые слова: air, airborne, airline, airplane, atmosphere, blurred, cabin, concern, confined, coughing, covering, crowded, discomfort, environment, experience, face, flight, health, hygiene, illness, indoor, journey, mask, motion, movement, passenger, people, personal, precautions, prevention, public, quiet, respiratory, safety, seats, sitting, space, tired, transportation, travel, virus, window, worry,