BLueberry and bubblegum are named for their appearance not taste... When you smoke the bluebizzle, it should not taste like blueberries.. maybe fruity, but not a specific fruit.. It gets its name for the blueish tint on the buds...
Shitty weed tastes like burning plant matter and that is it.. High quality weed is flavorful, but not specifically... IMO, flavors are:
Fruity
Skunky
Spicey
Weed smell is more varied:
Fruity
Skunky/Dank
Spicey
Hash like
Piney
Woody/Earthy
Minty(rare but does exist)
Like a wine conneussoir, it takes a trained nose and tongue to differentiate.. to a novice, or someone who doesnt pay attention, weed smells and tastes like weed, thats it... However, after you develop the ability to differentiate, it adds a new dimension of enjoyment to the smoking expiernce... For instance, I love the taste of fruity weed, but love the smell of skunk.