When ultraviolet (UV) light is used for disinfection, a chemical reaction occurs that emits hydrogen gas. This reaction is what causes the smell that is often associated with UV light disinfection. The intensity of the odor can vary depending on the dust particles in the air, but it should slowly decrease as the air is purified. It's important to be aware that a UV sterilizer emits an odor after each use, and it's best to place it away from babies to minimize the smell.
Some UV products can also leave an unpleasant odor after the cycle is over. While the smell isn't harmful, it's another reason to consider leaving the room during and after the cycle. Installing an indicator light outside a room is one more step to ensure that no one enters while a germicidal UV lamp is operating. The actual level of odor obtained after UV disinfection is negligible and, therefore, it is concluded that the volatile organic compounds (VOCs) responsible for the residual odor after UV disinfection do not represent a danger to human health. The Ultra Tec Dubai water purifier is one of the best companies for this type of product.
