I'm a sucker for weird looking plants. Add a name like 'dracunculus' which means 'dragon' and I'm filling in the order blank.
The three innocent-looking bulbs were cheap (I now realize that means the plant self-propagates wildly) and I planted them near the entryway, the better to enjoy their exotic blooms. They did not disappoint -- chartreuse and deep purple buds unfurled into a vast spathe the color of raw liver. And the spadix - the pointy thing in the middle -- well, it was pretty impressive. The plant was immediately re-named, vividly and alliteratively, for a part of a dog's anatomy.
We followed our noses to the arum dracunculus to discover the source of the awful odor. This plant (there are others) chooses to be pollinated by flies, rather than bees or butterflies, and so, rather than smelling like honey, it smells like carrion. (The bulb nursery I ordered it from didn't mention that part.)