In the last few years there's been some buzz about "sick building syndrome" and the possibility that certain house plants that help clean indoor air. Some websites are careful to stress that the link between houseplants and indoor air pollution has not been properly established via research. But it can't hurt to load up on houseplants just in case!
It has been said that some houseplants thrive on chemicals like formadehyde, benzene, and trichloroethylene, and that they help remove these omnipresent chemicals from indoor air. Formaldehyde is used to make everything from carpet backing to paper products to cleaning agents; benzene is used in petroleum products such as plastics, paint, and rubber. And trichloroethylene is used in dry cleaning, varnishes, and laquers.
You don't have to buy exotic houseplants, either–most can be found at your local nursery. An old post on Treehugger says that peace lily, bamboo palm, English ivy, mums, and gerbera daisies are good indoor air-cleaners. The University of Minnesota's Extension Services adds several varieties of philodendrons, dracaenas, and spider plants.
Can't hurt to try these–I just have to make sure to keep them away from my cats.