Plants take in carbon dioxide and return oxygen to the air instead. They also absorb toxic chemicals and release harmless by-products, as well as soaking up heavy metals deep into the plant tissues–away from you.
Add some plants to each room in your apartment. Choose plants that are indoor friendly and easy to maintain. A herb garden can serve double duty as food and air filter. For a cool design statement, hang a wall herb garden or a version of a “living wall” like the main bathtub image at the top of this guide.