The act of surreptitiously releasing farts into a high traffic area like a hallway so that the gas is whisked along with the unsuspecting pedestrian carriers. A role reversal of crop dusting achieving the same effect.
"Bro did you see the looks on those armyjoes walking by? I've been reverse cropdusting large groups that stroll past. They keep blaming randoms. I'm dying here"
I farted and asked my friend John to come look at a meme on my phone, sharing the lovely flowery smell of almost shitting my pants, reverse cropdusting him.