UV light has no odor. The vast majority of Lumin customers experience no odor. If there is an odor it is likely similar to the smell of burnt hair. Household dust is 90% composed of dead skin cells. Skin, like hair, contains a sulfide molecule. UV cleans with high energy light. That process also frees the sulfide molecule in a skin or hair molecule. If your unit has an odor please wash thoroughly with a damp cloth using Dawn liquid detergent and dry with a paper towel. Run one cycle with the drawer empty and let the device sit overnight. Next day, your unit should have no odor. If you have any questions or comments, please feel free to visit our Support page on our corporate website at 3Bproducts.com or 3BLumin.com and fill out a Support Ticket or engage with one of our Technical Support techs via live chat or email during regular business hours.