Asthma, Colds, COPD (chronic obstructive pulmonary disease), Pneumonia. Many things can affect how well our lungs and airways function. When our lungs are healthy, we can breathe easily. When our lungs are unhealthy, we may experience pain or discomfort when breathing. And when we have trouble breathing, it may be more difficult to do the activities we enjoy. It’s important to know how to deal with certain lung conditions that come from smoking, disease, or infection. To learn more about these conditions and how they’re treated, refer to this helpful resource.