My son is 3yrs old having cough from one month is on inhalation of budesonide n levolin, I want to no should we use this levolin inhaler only if he has severe cough or even for a normal cough should we use it. my doctor had prescribed 2puffs of budesonide inhaler for one month n 10puffs of levolin inhaler for 4days, since the cough was less i used only budesonide inhaler till now, n it's getting controlled but now suddenly my son is coughing little more should I use levolin inhaler also.