I have had a chest infection for a few months now, had many anti-biotics and steriods, have had tests that seem ok. The cough is awful, my dr mentioned emphasemia, my voice is also changing, sounds like i got cold but i havnt. my family ar worried, what could it be? i do smoke ,but findit hard to give up, i also have ductectasia which they ay is due to smoking ,is this right?