Hi my baby is 11 months old. For past 4 days he has been caught by cough which is wet and can feel it contains lot mucus. So whenever he coughs, it looks like too much cough is inside his chest. Also whenever  he sneezes, yellow mucus comes out. But mucus has not been cleared till now. How to clear mucus so his chest and nose becomes free from cough and mucus. What could be done to get him healthy. Please help me out. He is doing all activity normally. But cough sound irritates us .