You have to wait until October 2019 to try this but Skittles is working on creating a Rotten Zombie flavor for people to pass out while trick-or-treating according to Bustle and Mars Wrigley (Skittle's parent company).
Most of the Skittles in each bag will come in fruit flavors — that is, they’re pretty standard, taste-wise, even if their names have been somewhat spookified: Instead of regular old Citrus Punch, Melon, Blackberry, Black Cherry, and Berry, the flavors are called Petrifying Citrus Punch, Mummified Melon, Boogeyman Blackberry, Chilling Black Cherry, and Blood Red Berry.
No, they won't taste like actual zombies - sorry to disappoint some of you but this is as close as you get to that!