Indoor air pollution is due to off-gassing of furniture, flooring, paint, and other household items. Well insulated homes have worse indoor pollution because there is less dissipation to the outside air. The toxic off-gassed chemicals such as benzene, formaldehyde, xylene, toluene, and trichloroethylene are linked to negative health effects, such as fatigue, headaches, and even cancer.
House plants have the ability to clean the air. Through photosynthesis, they absorb these toxins, removing them from the indoor air. Some of the best plants studied are: weeping fig, English ivy, gerbera daisy, tulip, peace lily, areca palm, and bamboo palm.