Ключевые слова: adult, adults only, air, bacteria, boy, caution, city, corona, coronavirus, covid19, crowded, epidemic, exhaustion, face, face mask, flu, health, health care, healthcare, human face, illness, infect, infection, infectious, man, mask, medical, medical mask, medicine, men, outdoors, outside, people, pneumonia, portrait, protect, protection, protective, quarantine, respiratory, safety, serious, social issues, sterile, street, surgical mask, unhygienic, young men,