Carpet
It can trap mold, cockroach droppings, dust mites, and toxic gases – and all can hurt your lungs. They enter the air when you vacuum the carpet or walk on it. The chemicals used to make and install carpet could also cause problems. Consider putting in wood floors or some other kind of hard surface. Or use throw rugs you can clean outside the home. Vacuum your carpet three times a week, and steam clean it every year.