Ключевые слова: air, asia, bad, business, care, chemical, coronavirus, danger, dangerous, disease, dust, environment, face, female, filter, hazard, health, human, hygiene, ill, illness, infection, infectious, influenza, mask, medical, mist, n95, pandemic, people, pm25, polluted, pollution, problem, protect, protection, protective, safety, sick, sickness, smog, smoke, sneeze, toxic, trouble, unhealthy, virus, weather, woman, young,