The packing case the protank comes in smells like ..., very plasticy synthetic smell...I washed mine out like 2 times over the course of two days before I used it, maybe you are tasting that?
Ilovenips: Yes you wash the entire thing, including the part with the wicks, which is called the head. A dry burn is, after washing everything out including the head with the wick, you put just the head onto your device, and hit the button for a couple of seconds to get the old juice residue/gunk off of the coils/wick. You really would need to take the little post off of the head to see the coil itself, because you are suppoesd to hit the button until the coil glows red than let go of the button. Then you need to rinse again to get rid of whatever you just dry burned off. Personally I don't dry burn, I just wash the head(thing with wicks) and the protank itself real good under hot water, and just let it air dry. If I'm in a rush and don't or can't let it airdry overnight, just try to get as much water out of it as you can and you can just refill it even with the wicks still wet. It is going to take a couple of pulls to get the water out of the wicks before you see vapor and flavor again, but it still works. I personally never remove any of the wicks either and it still works fine, and I only use 100% VG since I can't use PG. YMMV.
Ilovenips: Yes you wash the entire thing, including the part with the wicks, which is called the head. A dry burn is, after washing everything out including the head with the wick, you put just the head onto your device, and hit the button for a couple of seconds to get the old juice residue/gunk off of the coils/wick. You really would need to take the little post off of the head to see the coil itself, because you are suppoesd to hit the button until the coil glows red than let go of the button. Then you need to rinse again to get rid of whatever you just dry burned off. Personally I don't dry burn, I just wash the head(thing with wicks) and the protank itself real good under hot water, and just let it air dry. If I'm in a rush and don't or can't let it airdry overnight, just try to get as much water out of it as you can and you can just refill it even with the wicks still wet. It is going to take a couple of pulls to get the water out of the wicks before you see vapor and flavor again, but it still works. I personally never remove any of the wicks either and it still works fine, and I only use 100% VG since I can't use PG. YMMV.