Ключевые слова: allergy, breath, breathing mask, business, business man, care, caucasian, concept, corona, corona virus, disease, expression, face mask, ffp3, flue, flue season, health care, hygiene, ill, infect, infection, influenza, mask, medicals, outbreak, pandemic, panic, people, pollution, portrait, protection, protective, sick, toxic, travel, unwell, virus, wearing, winter,