Ключевые слова: allergy, antibacterial, background, blue, breath, closeup, corona virus, disease, disposable, drug, earloop, face masks, filter, flu, group, healthcare, heap, hygiene, hygienic, infection prevention, isolated, many, mask, medical, medical mask, medical masks, operation, pandemic, personal, pollution, prevention, protect, protection, protective equipment, respirator, respiratory, security, soft, surgical, surgical mask, texture,