3 established factors can cause a cough.nThe first, which is often overlooked, is smoking cessation, which causes the regrowth of bronchial eyelashes and a form of mechanical cleaning of the lungs.nThe second is an excessively high level of nicotine which becomes irritating both for the ENT sphere and the lungs.nThe third is a faulty or poorly maintained electronic cigarette, a clogged coil that needs to be changed.