Every Year This Happens To Me And No Doctor Has

every year this happens to me and no doctor has helped me yet i have broncitus worked for american airlines for 34 years working on the ramp breathing in all of those jet blast fumes i never smoked had family leave because some days i just could not catch my breath i just came back last week from a lung doctor still no when i go to bed and lay down i cough my head off always spitting up flem thats thick like paste is it sinus or lungs