That... would be from a point in my life I'm not especially proud of, and I did eventually entomb the dragon skull after I gained a healthier respect for the lives and deaths of others. Besides, we didn't really have bleach back then and most spells to... prepare bones were unpalatable so it tended to have a rather unpleasant smell. It served the purpose of terrifying a certain few other nations into avoiding conflict during a tenuous time in history, mind you.