One thing you might try to remove any residual smells is to clean the Box as best you can with the provided brush and some isopropyl alcohol (not much, do not dunk the Box or let ISO soak into the wood) and with it empty and the lid open, put the battery in with firm contact for 1 or 2 minutes. Check the battery from time to time to ensure that it is not getting too hot -- ie, don't let it get any hotter than a fresh cup of coffee.
Another trick you might try (after the above) is to blow a lot of warm air through the Box (lid open again) with a hair-drier. If you try this be very sure that the lid is completely open and as far from the hot air stream from the hair-drier as possible (else the cover will soften and distort shape). A couple of minutes of this treatment should be plenty, if it is needed at all.
Also, a certain amount of screen discoloring is normal and probably does not require cleaning -- the Box was designed to not really need it.