Have had many acute respiratory problems. I am also very allergic and then there are other bugs going around, so not all the problems are caused by smoking per se, however the smoking is exacerbating any other problem that comes along.
Six years ago I was hospitalized for 10 days with pneumonia and asthma--I was pretty much at death's door. The docs told me that while under normal circumstances my pulmonary function is adequate, my pulmonary capacity is impaired. When faced with flu, pneumonia, etc. I am at serious risk.
The hoot of it is, I had a pulmonologist standing there lecturing me about smoking who reeked of tobacco smoke.
I certainly realize that smoking is harmful to me, but again it is MY responsibility.