J.K.
I have 2 small kids with what they call "reactive airway disease". My 4-year old daughter has been very sick since day one. On top of the breathing issues, she was also born with a congenital heart defect which she had repaired at 3 months old.
My almost 1-year old son seems to have the same problems as my daughter. As soon as he gets a cold, it goes straight to his chest. He coughs and wheezes until he vomits. There really isn't much you can do, except try to keep them as healthy as possible.
Both kids are on medication: my daughter takes Albuterol as needed, as does my son, but he also takes Flovent twice a day for what they call "preventative maintainance".
All you can do is hope that the kids grow out of it, and do your best to keep them healthy and happy.