Anything that irritates can cause phlegm. It's like really gross lung lube. It's gonna be packed with crap your body wants to get rid of. It'll even expel inflammatory tissue cells. So long story short, vaping is still an irritant, and your body will once in awhile try to get rid of all that stuff.
I also inhale. Because why wouldn't I? lol. The phlegm was pretty intense but only for a few days after quitting. My yearly bouts of bronchitis probably did a fair job of cleaning everything out so I don't think there was as much crap as a normal smoker who didn't get it twice a year like clockwork. Now the worst I get is the feeling that there's something in the back of my throat. But that usually goes away after drinking some water.
I also inhale. Because why wouldn't I? lol. The phlegm was pretty intense but only for a few days after quitting. My yearly bouts of bronchitis probably did a fair job of cleaning everything out so I don't think there was as much crap as a normal smoker who didn't get it twice a year like clockwork. Now the worst I get is the feeling that there's something in the back of my throat. But that usually goes away after drinking some water.