When a cough occurs, it's an indication that the cilia—the millions of tiny "hairs" that whip contaminants out of the bronchi, up the trachea and out the pharynx, where they are swallowed—need some extra assistance, explains Dr. Murray Grossan, MD, founder of Grossan Sinus and Health Institute and author of "The Whole Body Approach to Allergy and Sinus Health." Dry coughs, in particular, are a sign that the mucus is too thick to be pushed out by the cilia. When that's the case, have your child drink a light, decaffeinated tea with lemon and honey (unless they're under a year old) until their urine turns light, says Dr. Grossan. If that doesn't do the trick, try steam inhalation, sticking the tongue out so the steam will reach the lungs and not just the back of the throat. In fact, he advises to only use a steamer or just the teapot in lieu of any vaporizers in the bedroom, since they're hard to clean and tend to develop mold.