Student with taste/aroma synesthesia had to leave dorm because roommate's name had "murky piss smell"

Synesthesia is the fascinating neurological phenomenon whereby stimulation of one sense involuntarily triggers another sensory pathway. For example, some synesthetes can 'hear' colors or shapes. Henry Gray has a particularly lexical-gustatory synesthesia—spoken words trigger can trigger the sensation of tastes or smells for him. — Read the rest