It's hard to explain to people why I cannot taste anything that I eat. When I tell them it's because I can't smell anything they cannot grasp why that affects my sense of taste. I usually leave it at, "You know how food is tasteless when you have a cold?" That usually drives the message home that your sense of taste is really derived from you ability to smell. As you chew food or drink liquid, it's actually the aroma from this that is getting to your brain.
They get confused though when I tell them that yes, I can "taste" salt, sweet, sour etc. Or that if I eat a hot pepper, yes, I do feel the burning sensation. But for instance, if I were to eat a piece of cake, I could taste/feel the sweetness of the sugar on the vanilla frosting but I am unable to actually taste the vanilla itself. Or if I eat a sour apple, I can feel the sourness but cannot actually taste the apple. It can be frustrating and I usually don't even say anything when someone says, "Wow that was a great meal, how was yours?" I usually just say it was really good.