Many folks worldwide live in constant fear of chemicals. High up on the list are volatile organic compounds (VOCs), such as hydrocarbons, which vaporize easily. VOCs come from gasoline combustion and from evaporation of liquid fuels, solvents, and organic chemicals such as those in some paints, cleaners, nail polish remover, soaps, pesticides, and even we humans.
Here are a number of everyday emitters of VOCs: