A smell-a-like is a perfume that smells like a designer fragrance but with a different name and packaging, and at a cheaper price. A smell-a-like isn't an exact copy, but often smells very similar.
I'm adding this from a poster I read on Amazon, who shared a dupe for Prada Candy. Two different people said that Speziali Fiorentini Caramel was created before Prada and that they must have taken the notes from this caramel perfume. It's said that they are clones of each other. I wanted to share that with those who wish to check it out. However, they are about the same price so what's the point. But I'm just sharing there is something that smells the same.