Been vaping for almost 9 months now and at the beginning of my vaping "career" I immediately took to atomizer - I've tried cartomizers (DCs and Horizontals) and within minutes of using them I can feel my chest tightening up and I have a hard time breathing. There's no way it's the juice (flavorless ) and there's no way it's the mix because I've never had any issues with atomizers. I'm thinking it's the polyfill that's doing it for me because I didn't have any issues with clearomizers. Has anyone else had a similar issue? Better yet has anyone had a similar issue and found a carto that works for you?