There's a certain allure to the smell of a new car or that clean citrus smell from a recently-used cleaning product. However, despite how pleasant a scent may be, it's important to consider the sources of any odors in the home and whether or not they are conducive to good health. Many smells that come from products for the home contain volatile organic compounds or VOCs. The scent can be natural, as from a pine tree or a fresh orange. It can also be man-made, like an artificial pine-scented cleanser or the smell of drying paint. Some VOCs may not produce an odor at all.