AUTOMATIC IN-STALL ODOR NEUTRALIZING AIR FRESHENER. The ActiveAire® Automated In-Stall Freshener Dispenser automatically combats odor at the source to enhance the restroom experience. This state-of-the art odor management system uses motion-sensing technology to neutralize odor by releasing a burst of freshness upon entering and leaving the stall. It's on-demand feature can be activated with the wave of a hand if a visitor needs an extra burst of freshness.