Automatic deodorizer dispenser

An automatic deodorizer dispenser is an air freshener designed to release the encapsulated scent at a set time, or under preset conditions. Some fresheners operate by releasing a quick burst of scent every minute, 10 minutes, or 30 minutes so that you don't become too accustomed to the smell. Other kinds operate by having a light sensor or motion sensor attached, and releasing a burst of fragrance whenever this sensor is tripped.^[1]

Each bus of TransJakarta is equipped with automatic air freshener dispensers which periodically spray car fragrance in order to keep the air fresh.