I get to enjoy a commute through farm country every work day. It is my habit to pull over and watch the crop dusters when they’re out. I’m secretly jealous of them as they zoom with their wheels just above the crop in a powerful turboprop aircraft. In the fall of 2017 I caught this fellow spraying what I estimate is an antifungal onto a corn crop near the end of the growing season. The negative image seemed more interesting than the positive.
Duster in Negative Space
Helicopters show up now and again. These folks can do a 180 turn at the end of a pass faster and in a tighter space than can a fixed wing aircraft. Also they can pause to think about things whereas a fixed wing aircraft cannot.
Crop Dusting Chopper
Think what you will about spraying. If they’re out there, I’m going out to watch, but not so close as to smell the spray.
Lamentations on Chemistry 
crop dusting is surprisingly dangerous – they fly low and apparently there is lots of pilot errors, it seems that the cumulative exposure to pesticides can impair the memory and focus.
There is truth in what you say, but I still think I’d try it. You only get the sensation of speed when you’re close to the ground. They do wear respirators, but fat good that would do in the twisted wreckage when the hopper (tank) is in front of the cockpit. Off season there is work in towing gliders.