UVC 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. UVC light kills pathogens by destroying DNA 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.