Suggest Treatment For Cough While Treating Side Effects Of Steroids

I am presently on Spiriva (2 yrs.) Previously I was on Advair & asked to switch because of the steroid side effects. I wll see my Pulmonologist in April & am prently experiencing a lot of coughing so I m thinking maybe I need to try something else. However, I am concerned about the risk of dementia with anticholinergics (JAMA Jan.26,2015. How would Anoro be helpful to me?