The UV Lamp emitted to the fan wheel which spray the Ti02. As a result it has the effect of removing odor and killing germs which can decompose waster gases such as organic or inorganic pollutants in the air into unharmful gases at a much quicker rate due to efficient air circulation. 6 pcs hi-lite UV LED, durable & easy to make after service. Quite comfortable cooling air&outstanding interior decoration. The active carbon filter captures and filters all particles larger than1 microns, removes 92. 5% Nicotine 90% stinking smell.