No, no problem with that. But I've pretty much given up on my Nano for now. I've cleaned it twice, tried several flavors, some 50/50, some 80/20, and the burnt taste keeps coming back. It's totally harshing my vape, dude!
I will say that it may be worth leaving them full of liquid, sitting, for a few days. One I had did lose almost all of the bad taste after doing that. Given the number of complaints about bad tastes from the Nano, I am also surprised that there haven't been many more "official" responses.