Ключевые слова: balkans, belgrade, beograd, business, buying, choosing, city, corona, coronavirus, coronavirus in serbia, coronavirus protection, covid 19, crisis, epidemic, face mask, facemask, health, illness, infection, koronavirus, koronavirus u srbiji, male, man, mask, merchandise, middle aged man, pandemic, people, pollution, prevention, protection, respiratory, safety, sars cov 2, serbia, srbija, urban, virus, walk, walking,