Ключевые слова: abstract, adult, air, architecture, asthma, background, bacteria, building, care, ceiling, chest, cleaning, closed, cold, concept, condition, conditioner, conditioning, construction, cooling, design, dirty, disease, duct, ducts, dust, energy, exterior, factory, filter, frame, gray, grunge, health, home, house, industrial, interior, metal, office, old, pattern, shutter, steel, texture, vent, ventilation, wall, white, window,