Ключевые слова: 19, airborne, coronavirus, covid, covid19, dangerous, disease, environment pollution, epidemic, face, fear, flu, healthcare, illness, infect, infectious, influenza, look, looking, looking at camera, man, masked, medicine, mers, metro, novel, outbreak, pandemic, passenger, people, portrait, problem, protect, public, rail, railway, respiratory, safety, sick, station, subway, train, unhealthy, viral, wearing,