There is little to no chance that a fungus could make the dead stumble about looking for brains, but if it's true than South Dakota may be good place to be.
With the popularity of zombies, you had to wonder just how long it would take before someone invented something to make the "normal" people smell like a zombie.
You're probably safe to plan that Christmas party for the weekend, put up the tree and hang the lights if you haven't already done so and buy some Christmas gifts.