Not to get further off topic, but continuing on the smells-on-rides theme, I'm trying to think of rides that already (or previously) used this feature.
Closed Rides:
Kongfrontation's banana breath (although I never did notice it)
Horizon's Orange Groves
Current Rides (and Shows):
Despicable Me: Minion Mayhem's banana gun (in pre-show)
Soarin's Orange Groves (and allegedly pine trees, but all I ever smell is oranges)
Journey into Your Imagination with Figment's Skunk scene
Spaceship Earth's fire smell in burning of Rome
It's Tough to be a Bug's stinkbug scene
Kali River Rapids burning trees (although I didn't smell it last time I was there)
Mickey's Philharmagic's desserts in Be Our Guest scene
Stitch's Great Escape's chilli dog burb
And of course the fake smells pumped into Main Street USA, like popcorn, candy and cookies (and the real ones like fresh waffle cones)
Wow, after making the list, it seems like Disney really has the smell market cornered when it comes to Orlando parks.
Does Shrek 4D have a smell moment? Onions perhaps? I dunno, it's been awhile since I've done that one.