I went to vaping BECAUSE of the cough. Never had a cough, then went a couple of months of daily morning hacking and a constant chest rumble. Got tired of it, so tried vaping in desperation, this was on a Saturday. Monday my chest was clear, no rumbling. No hacking. A couple of coughs the first week, nothing serious, but clear. Third week I can't keep my throat clear but my nose is, so apparently my chest is sweeping the gunk up to my throat. But no coughing (yay!) anymore.