Ключевые слова: adult, air, bad, care, city, concept, contagion, danger, disease, epidemic, face, flu, goggles, hat, hazard, hazardous, health, human, illness, indoors, infection, infectious, infestation, inside, male, man, mask, medical, medicals, medicine, pandemic, people, person, plague, pollution, precaution, prevention, problem, protect, protection, quarantine, safety, shocked, sickness, sky, smog, toxic, viral, virus, worried,