My symptoms of chest tightness, shortness of breath, and dry coughing started two years ago when I moved to New York City from Florida. There seems to be a correlation between
my symptoms occurring because of pollution (nitrogen dioxide) and cold air. I am not convinced that I have asthma because spirometery and PFT testing have always been normal. I did have a chest x-ray which was clear except my doctor said that my small airways looked pronounced which could indicate airway inflammation.