Ключевые слова: air, airborne, airline, airplane, anxiety, arrangement, background, blurred, cabin, concern, cough, crowded, discomfort, distance, flight, flying, focus, health, illness, indoor, interior, mask, movement, pandemic, passenger, people, protection, protocol, public, quality, quiet, respiratory, response, restrictions, safety, seatbelt, seating, sound, space, transport, travel, travelers, wearing,