Well I am now unsure whether I should return or not because when vaping the green tea the plastic taste is not there at all. I contacted the store and they said they sent my complaints to S&B directly and would get back to me when they answer. At that point I will also send the serial number to check if its authentic.i would return it, pal, i own 4 top tier vapes and I've never had that also it sounds very dangerous for your lung s