We often think of home as our safest, most private space. Unfortunately for some, it also represents the threat of secondhand smoke exposure, especially for children.

More than 15 million kids live with secondhand smoke at home, surrounded by pollutants that linger in the air and coat almost every surface. It's a dangerous environment for children, whose growing organs and delicate immune systems are especially vulnerable to chemicals and toxins. Simply put, secondhand smoke makes kids sick.

Secondhand smoke is also an issue for renters and condo-dwellers, but sharing a building doesn't have to mean sharing your neighbor's smoke. A few simple rules are all you need to create a smoke-free environment for your entire family, no matter where you live.