I actually stopped coughing. However, if you are using 100% PG
juice with nicotine, the skin irritation of nicotine is hardly buffered at all. SOme people are sensitive to that and can get sore tongue (I did), sore throat or even sore lungs. So if you are
vaping 100% PG, especially with medium or high nicotine, buy some less irritating juice - look for juice with at least 30% VG. The VG will smooth the vape, dull the TH a bit, dull the flavor a bit and add more visible and persistent vapor. Irritation can also be reduced by using a lower nicotine level.