I have been vaping with a smok alien 220 and a dead rabbit for quite a while now and recently I bought a justfog minifit pod system, I've never experienced gagging with either but last week I woke up and just couldn't use the smok anymore, I can still use the pod system but whenever i try I just start gagging like crazy, I've read on other forums but none seem to help, the gagging has only started since I got the pod system, thoughts?