I traveled from LAX recently and had one evod + almost full tank in my purse. Didn't even put it in the ziploc. The rest of it (charger, spare battery and a few bottles of juice) were in my check-in luggage. I didn't take any chance and only took new unopened plastic bottles.
TSA didn't bat an eyelash either way (on the way out I went through their express lane stuff though). It was a domestic flight both ways, though.