Two different words: device from Latin 'vannus' (winnowing basket), enthusiast from 'fanatic' (temple-frenzied).
Air-device from OE 'fann' (winnowing fan), from Latin 'vannus.' Enthusiast sense (1680s) is short for 'fanatic,' from Latin 'fānāticus' (inspired by a god). Key roots: vannus (Latin: "winnowing basket"), fānāticus (Latin: "temple-inspired (for enthusiast sense)").