Whether you live in an expansive estate or a cozy cottage, there are proactive ways to ensure the air in your home stays healthy year-round. Here's a look at how to recognize and address common indoor air pollutants. Tackle mold head-on A leaky window, a drip beneath the sink or a humid climate can all trigger a mold problem in your house, according to the Environmental Protection Agency (EPA). It's common for people to have an allergic reaction to mold, and it can also ...