I've talked about different types of fear that comes with it's own generalized flavor but I know it's all still pretty vague. Much like the food you eat, there can be a mix of emotions in a person's fear that might make it easier to describe what I'm tasting. For example, people getting an excited rush while being scared is like eating something sweet in a syrup form. That might taste like melted caramel or maybe even pancake syrup such as strawberry syrup or maple syrup. It really depends on the victim.
However, the flavors does not have complexity in layers- think simple and deconstructed. So, in your example, the candy bar is a combination of chocolate, caramel, nougat, and nuts- which means, unfortunately, there really isn't fear that I can spook to get the energy taste exactly like a Snickers.
Why do you think I still eat mortal foods even though I don't need them to live? Y'all got some good shit! 👌