Pull corn husks back to remove and discard the silk. Pull husks back over the corn. Soak corn in a pot of water for 1 hour.
Place butter in a small dish. Add bourbon and cinnamon and carefully mix with a fork until well incorporated.
Preheat the smoker to 225 degrees F (110 degrees C).
Place corn, unstacked, onto wire racks. Place the racks into the smoker. Add wood chips according to manufacturer's directions. Smoke until corn is tender, turning halfway through, about 1 1/2 hours.
Pull husks off corn and spread the bourbon butter over corn. Sprinkle with salt.