We had that orange blossom smell in AZ, at least in the 70's and 80's. I remember being so overwhelmed by it, that it gave me an allergy attack!
I think you'd have to drive pretty far out of the city to smell it now, but I distinctly remember standing on the ramp of the ASU music building (the birthday cake building) and smelling the orange blossoms. Don't ask me what I was doing at the music building, though... I have no idea!