What kind of brain tumor can cause loss of taste?

Actually lots can: One that comes to mind right away is something called a meningioma and one of these could settle into what is called the olfactory groove. This will cause a loss of smell which then, distinctly can affect taste. But why would you be worried about something as rare as Hen's teeth? Loss of smell and taste due to brain tumors are almost so rare that some people actually get used to them.