question: respected doctor,My son is 4.5 yrs old, he has the allergic problem, in the age of 2.5yrs he was admitted hospital for pneumonia. Now once in a 2 to 3 months he is suffering from cold & cough. Dr. suggested to take asthalin inhaller. we are using this. but is the asthalin inhaller safe for my son? how to protect him from this type of desease.regards rupak saha