You sneeze as you get a nose-full of pollen, feeling a tickle travel down your body. You scrunch and rub at your nose, feeling confusion as you touch something definitely not your nose. Or at least something that doesn't feel like your nose, seeing as when you go cross-eyed you can see some sort of muzzle.
You yelp in shock, the sound coming out as some sort of moo as the yellow from the muzzle spreads, fur and flowers sprouting out. Your fingers turn to paws and your feet into hooves as you stare in dismay, unsure as to how you could stop the change.
You're... some sort of flower cow now, you realize, with velvety fur and leafy hair that fits right in with the plants of the greenhouse.