So, this is my first unregulated device (coming from a well loved Mighty), and I have noticed that when I load the high heater and fresh battery, if I press the button longer than say 10 seconds, I notice that there are some off smelling fumes that come up from the heater, almost like melted plastic or glue? I'm assuming this is user error, but if not has anyone else noticed this? Part of me wonders if it is kind of like when I got the Mighty, I think there was a recommendation that you crank the heat to max and let it burn off any residual machine oil or whatever...so is that maybe what is going on here?