Since the beginning of recorded history, humans 1to mask or enhance their own odor by using perfume, which emulates nature's pleasant smells. Many natural and man-made materials 2to make perfume to apply to the skin and clothing, to put in cleaners and cosmetics, or to scent the air. Because of differences in body chemistry, temperature, and body odors, no perfume 3exactly the same on any two people. Perfume comes from the Latin “per” meaning “through” and “fumum” or “smoke.” Many ancient perfumes 4by extracting natural oils from plants through pressing and steaming. The oil was then burned to scent the air. While fragrant liquids used for the body are often considered perfume, true perfumes 5as extracts or essences and contain a percentage of oil distilled in alcohol. Water is also used.