Ключевые слова: air, breath, business, business man, businessman, care, caucasian, concept, coronavirus, danger, dirty, disease, dust, emission, environment, flu, global warming, health, health care, human, ill, influenza, male, man, mask, mask face, medical, n95, n95 mask, nose, people, pm25, pollute, pollution, pollution mask, portrait, protect, protection, protective, protective mask, safe, safety, sick, smog, toxic, unhealthy, virus, wear, white,