You are right in the fact that this vape had something going on out of the box but I was a virgin at the time. I now have many vapes as you can see in my sig and I think I know the difference now. I have burned in all the vapes I have and they smelled like machine or electrical smells but it went away after a few burns. I did burn in the DV as well when I got it and I will say for a long time the taste wasn't great. If I can find when I bought it I would tell you but it was right when it was released. I don't even have a serial number on mine. So from then till now at some point that vapor went away. I have no reason to make it up in my head cause if it was gassing I don't need to use it I have others. I don't clean it that well often but when I do whatever vapor is coming out does go away but takes a bunch of burns after cleaning. This vape is very hard to clean and I even use a straw to suck out any particles. Now if you have a new one and did 25 burns and it is still gassing I wouldn't use it either knowing what I know now. Return your units since you already tried two and get something else. May I suggest the INH since OF said pax lol. If you really want a wonderful clean taste the solo might be up your alley. I myself love the DV but it is not at the top of my list since I got others I like better. Good luck finding what you need.