scope kills the germs that kill bad breath.

however, some people believe that having a forward facing scoop forces air into the induction system (ram air), helping horsepower.
I've always understood the reason for the cowl hood is the forward facing SCOOP has too much turbulence and makes it hard to tune the car, the cool air at the base of the windshield (cowl) is easier to draw into the engine compartment to feed the motor.