Ключевые слова: 3d, air, allergy, breathing, builder, cap, caucasian, construction, doctor, dust, egg, equipment, factor, filter, hard, hardhat, hat, haze, headwear, helmet, hygiene, industrial, industry, influenza, isolated, mask, microns, n95, nose, object, particulate, plastic, pm 25, pollution, protect, protection, protective, safe, safety, sick, transmission, virus, white, white background, work, yellow,