How can I get rid of my dry smokers cough for an interview?

Quit smoking! The most important thing you can do is to quit smoking today! Beyond that, your cough needs to be evaluated by your doctor so the correct diagnosis can be made and treatment initiated. Possible etiologies for this cough include bronchospasm from any cause, gerd, post-nasal drip or a combination of these factors. Quit smoking and see your doctor!