If you're nervous about that, use an adapter.
I've been using two VNs for about 6 weeks now with no problems. When I begin to lose flavor, I finish that tankful (I like the short wick so there's a lot of twisting and turning to vape those last few drops) then I take it apart, wash it with non-antibacterial, unscented soap. Everything but the wick dries quickly so I've been rotating 3 coils -- using 2, drying 1.
So, this post is taking forever to write. Shortly before I saw your post, I came into the living room and didn't just drop my V8, I flipped it so it hit the bookcase twice before landing on the floor. My first reaction was that my VN had a full tank of a coffee-based liquid and OMG!!!!!! but it had just knocked free of the V8 and was sitting, fully sealed (and not dripping) on the carpet. The battery door came off the V8. One battery was under the desk and, when I found the door, the tab had broken off. So I took the door from my non-functioning, white V8 and put it on the back of my black one (it's actually a cute combo), screwed the VN back in and vaped away.
All was good until I needed to change the batteries. I went to take the VN off and ended up with a desktop full of coffee liquid. The VN was a little stuck in the adapter. This was because dragonbone jinxed me. Okay, it was because I gave several good bangs against hard objects. I took the adapter and the VN off together and then had no trouble separating them. But that VN has taken a dislike to that adapter. It's working fine on my other devices and I screwed my other VN into the same adapter and put them on the V8 where they are working just fine.