Clear Damaged Lungs Our lungs are a vital organ to keeping us alive and well. Not only do we need air to breathe, we need our lungs to filter oxygen into our blood. Smokers and people who live in a highly polluted area, chances are their lungs have become damaged over time. In most situations, it is possible to clear your lungs of toxins and even repair the damage that has been done. You have to eat your vegetables.