Hey all im pretty new to the vaping world started about a week ago. i purchased a Blu e-cig (ya i know) But every so often i will taste a strong burning taste/smell as well a burning plastic smell thats the best way i can describe it. So this has got me wondering the stuff inside the carts looks like cotton but ive read its actually polyfill (sp) i was wondering how safe is this stuff if its in fact burning. Would this cause health effects? such as burning plastic causing lung damage and such or am i just over worrying about stuff lol. Anyways im sure someone can explain what exactly this stuff is in the carts and how safe it is to (Our lungs) if its in fact safe.