The coughing -no coughing could be genetics or lifestyle or both. I believe that my no coughing is a combination of both. I smoked a pack and a half for thirty years, yet I seem to age really well. Smoking is supposed to 'age' you, yet I do not have 1 wrinkle, and I am 44. I do seem to age much better than my peer group. I always tell people it's genetics. Another factor is lifestyle. I work-out regularly and I am cardiovascularly fit. Moreso than most, even the nonsmokers. I believe my aerobic conditioning is a definite factor in not having smoking related symptoms including no cough...