Why do roses smell so sweet? (video)

(American Chemical Society) Valentine's Day is Saturday, and people will be spending billions on their sweethearts. Much of that cash will be dropped on sweet-smelling roses. But did you know that one minor chemical change would make that rose not smell as sweet? Chemist Raychelle Burks, Ph.D., explains why in the debut episode of the new Reactions series Get to Know a Molecule (GTKAM). Check it out here: ://youtu.be/dQyQns4i5hI.