Answer by  
                                                                                          Wendy47 (140)
                                                            
                          
                          
                                                           Disuse my be creating the odor. Unplug, remove the plastic cover and removable black foam filter and give them a thorough washing and drying. Carefully and safely wipe the outside of the unit with a damp cloth. Wait. Plug in, run for an hour, and the smell should lessen.