I have a copper doge on my Corsair mod. Seems like you can taste the copper, and after a few days I have to clean the hell out of this rda because it tastes bad and there's a lot of green residue from the copper oxidizing. Should I be worried about inhaling the copper residue? Definitely makes me wish I would have chosen a different metal doge... I'm happy with the vapor, and the flavor isn't too bad, but should I be worried about this green gunk?