I have been vaping a little over as year, I have not changed any equipment usage or different juices. I have tried in the past when I was having an issues with swollen throat I tried different variations of pg and vg but found out I did not have allergy to them. The past week, I have what started as a throat tickle and some flem, to now I need to cough to clear my throat and its getting worse. I have made no other changes in wattage, juices, or devices so I am not sure. Right after I inhale I feel the need to clear my throat. Help please, vaping is my crutch I used to quit smoking last may 2016