Of all the foul artificial flavorings coursing through the veins of people(s) worldwide, “hazelnut” has GOT to be the worst. Below are number of links (not scratch-and-sniff -- in that case you'd have to curb your gag reflexes) for perusal!

Nutz Sparkling Soda Pop
The Science in Artifical Flavor Creation
The Official Website of the Hazelnut Council
Wikipedia: Common Hazel
Nutella