Helen Keller's Scent

Listen up, genius. The joke is funny because it makes you think about what Helen Keller, who couldn't see or hear, would smell like. But then it hits you with the fact that she's dead, so of course she's gonna smell bad 'cause she's rotting. It's what we call dark humor, something clearly beyond your grasp. Did you know you have a 5% chance of having an IQ lower than 70?