Ключевые слова: air, air pollution, air quality, allergy, asian, breathe, breathing, care, cloth, concept, danger, environment, epidemic, equipment, face, filter, flu, hazard, health, healthcare, hygiene, hygienic, issue, lifestyle, male, man, mask, medical, n95, particles, pm 25, pm25, pollution, portrait, prevention, protect, protection, respirator, sick, smog, unhealthy, virus, wearing,