Non-electric diffusers for air fragrancing preparations; Vaporizers being electric aromatic oil diffusers; Electric aromatherapy diffusers; Plug-in diffusers for mosquito repellents; Ultrasonic mosquito repellers; Electric devices for attracting and killing insects; Plug-in diffusers for air fragrances; Electric diffusers for air fragrancing preparations; Electric fragrance diffusers incorporating night lights