How do I use the Aromatherapy Tray feature?

Open the Aromatherapy Tray cover, place a cotton ball or other absorbent material into the tray, add a few drops of essential oils onto the material, and close the cover by aligning the larger tab with the large slot and pressing down until it snaps in place. The aroma will infuse with the cleaned air. Note that scented oils may trigger the VOC sensor to show yellow or red and cause higher operation speeds in Auto Mode. (Page 9)