No bad ozone smell. There's no ozone smell when germicidal lamp works. Convenient disinfection. You can smell the special smell when the bulb lights up. This smell is come from harmful burnt particulates by the UVC ray in the . It's normal working phenomenon, just like the sunlight in . Big irradiation area up to 500sq ft, regular E27 . Very easy to install. 254nm wavelength UV-C light, such as 30 of the shine, germicidal ability, can work for bed, room space, clothing, object surface. Type: UV Germicidal Lamp Voltage: AC 85~265V(worldwide fit) : 40W LED Type: 5736 SMD LED Beads : 130 LEDs Luminous: 1600LM Lifespan: 50000H Color Temperature: Ice blue Attentions 1. Please allow tiny size deviations due to human measurement. 2. Do not let your eyes and skin expose under the germicidal light when it is working You must leave your room(include pets). And you also need to turn off the bulb before you approaching it. Ventilate for 15-30 minutes after disinfection. 3. If plants or fish tanks cannot move, cover with opaque newspaper or cloth so UV rays do not penetrate and harm . 4. Before the germicidal lamp starts to work, you may smell a special burnt smell in the . 's the smell of harmful combustion particles in the . Please do not worry. size:125*46*46mm Material:aluminum colour:silver Package Contents: 1 * UV Germicidal Lamp Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.