Ban smoking in public housing.

Ten years ago, I was the doctor for an 18-year-old with cystic fibrosis whose mother was a heavy smoker. The patient told me how she coughed, wheezed, and choked when she was at home. I became close with her; it seemed she was always in the hospital, and I couldn't help but think it was because she wanted to escape a toxic environment. Three years later, at 21, she died—more than 14 years before a person with cystic fibrosis could be expected to live at that time.