"Pew! Smells like something died!" -Ralf, unaware that the odor is actually him
Ralf Flesia, better known as Ralf (which is also what he makes people in scent range want to do), wonders why he can't make any friends. The flower on his head, while pretty, only seems to attract flies, and repulses everyone and everything else.
Well, save for Bea Headed, who, in her defense, doesn't have a head and, by extension, a nose. She sensed that Ralf needed a friend, and, ever since that day, they've been inseparable.