Do this up to four times a day to help loosen the tightness in the chest. Check with your doctor to find out what role a humidifier will play in helping your child get better. Cut back on the dairy products - dairy produces supposedly produces thicker mucus, although some medical experts dispute this as a myth. If fever is the issue, give your child a cool bath to get the temperature down. Keep a cool compress on the forehead or the back of the neck. Make sure it isn't too cold. Always keep your child hydrated. Make sure he's drinking water and diluted juice throughout the day. Keep your child's head elevated to encourage drainage. Of course, you always want to consult your pediatrician with any questions.