At the beginning of the switch to the vaporizer, you may have to cough more often. There are several reasons for this: Conventional cigarettes contain anesthetics that suppress the urge to cough so that you can inhale the smoke undisturbed. The vaporizer does not contain any narcotic substances, which means that coughing is not suppressed. In addition, your lungs recover very quickly after giving up cigarettes and the cilia in your lungs destroyed by smoking grow back. This can also lead to coughing. So basically, the initial cough is a good sign - you're giving up the toxins from cigarettes and your body is recovering. After a few days, the cough goes away in most people. Make sure you're drinking enough water.