Hi dear,
If he do not have fever or breathing difficulty, this probably indicates a
viral respiratory infection.
Ventolin contains albuterol/salbutamol, a
bronchodilator that will reduce cough if there is
wheezing in chest. Wheezing in infants is better treated by nebulisation, but this may not be feasible during a trip.
Although ventolin can be safely given to 3m old baby in time of need,
levosalbutamol will be more apt. You can give syrup Levolin(levosalbutamol 1mg/5ml) 1.5ml 3 times a day. If the cough is not disturbing, and he is active and playful, cough will subside without any medicines in 3-5 days.
If develops fever or breathing difficulty, or refuses to feed, kindly take him back to doctor.
Hope I have answered your query
Let me know if I can assist you further
Dr Muhammed Aslam, Paediatrician