I smoked daily for a while and stopped for a month, this stuff started happening to me too when I started smoking again and I thought I was ruined, but eventually it stopped happening (I bought a new strain and convinced myself the last one was the problem). I also noticed when it was happening that it didn't matter in my case how much I knew nothing bad was going to happen it's that I didn't know how big of a breath to take each time and I think I was hyperventilating from big breaths or felt like I was suffercating on small breaths.