A few weeks ago I got something caught in my throat and coughed a horrible skin-ripping cough. My girlfriend immediately pounced and asked if I had cracked and smoked that day. I stated that I hadn't (which was true). She responded that she hadn't heard "that cough" in months and had to be sure.
Now my girlfriend is neither a doctor nor an x-ray, but the complete disappearance of smoker's hack seems like proof enough to me.
Now my girlfriend is neither a doctor nor an x-ray, but the complete disappearance of smoker's hack seems like proof enough to me.