About Zucchini Bread... another of my favorites, BTW.
I've noticed that there are some flavors I cannot taste... or at least taste 'well'. Vanilla is one of them for me. When I eat vanilla ice cream I can taste 'sweet', like sugar, but there is no 'flavor' to me really, other than just 'sweetness'. When I smell vanilla extract I love the smell, very distinctive, but I get none of that 'vanilla' flavor by taste.
Most hard Christmas candy is like that for me... I taste the 'sweetness' but not often the 'flavor'.. unless it's very strong.
I'm not a fan of gelatin type candies... like Skittles.