Ahhh, a breath of fresh air. Adding a few houseplants to your space can go a long way to improving the health of your home, such as cooling it down during the warm months and boosting cheer. But there are also some great wellness benefits, too. Namely, many plants can help remove chemicals from the air, including benzene and formaldehyde, according to NASA research. For the health of your lungs, here are five pretty plants that make the air you breathe clean.