This meal has a peppery smell don't you think. Smell is different to taste and flavour. It smells like pepper.
I love the peppery flavour. It tastes like pepper, but may/ may not be pepper in the food.
I love the peppery taste. It is really the same as flavour. Flavour is less informal than taste.
You can say = you have good taste, which means someone has good taste in fashion, love etc. But you can't say you have good flavour.