Quit smoking 18 months ago week later was diagnoised with asthma and to date still have it could it be due to me not smoking im on abuterol 2mg advair?

Congrats on being: smoke free. That's a great accomplishment. Please don't let your asthma symptoms be an excuse to start smoking again. That will make things worse. Stick w/your doctor for accountability and support. I see that you are anxious in your history. Consider a mental health profession to help you learn strategies for stress management. Peace and good health.