If you can't pronounce it, should you use it? Reporter: Wendy Mesley; Producer: Gaelyne Leslie; Researcher: Louisa Jaslow When Shawn Ellis tests the air in parts of a house where cleaners are stored, he is measuring volatile organic compounds (VOCs). His meter won't tell you how strong or harmful the chemical particles might be. It will provide clues as to how many particles there are. "You can always smell those cleaners even though they’re all tightly sealed." Everywhere the cleani...