Clean air is important for all of us. We’re breathing 24/7, so if the air is dirty, then contaminants are constantly entering our lungs. Dirty air can lead to negative health effects, from a minor cough to more serious respiratory illnesses. But where is the dirtiest air that we breathe everyday? The answer may surprise you. This infographic by Your Filter Connection looks at the air in your house and how it might be making you sick.