We are now in the midst of cold and flu season, so what can we do to lessen the risk of illness? Did you know proper air filtration can lessen the severity of symptoms caused by a cold or flu? It’s true; the quality of the air you breathe has a significant effect on the severity of your symptoms and affects the number of times you get sick per year. Air filtration and air purification systems are used to remove a different range of contaminants from indoor air. In fact, air purifiers are especially important for those with weakened immune systems.