No. This is one of the most misunderstood aspects of air cleaning. It’s for good cause. Ozone is a potent substance. SmartAir sanitizes and catalyzes the nano-coated filter to activate PCO with ultraviolet-C bulbs. Clear quartz irradiation bulbs used in standard ultraviolet-C irradiation enable lower-frequency wavelengths to pass through. The lower wavelengths are what cause ozone to form. Smart UV lamps are made of doped fused quartz, which blocks all lower wavelengths and prevents the formation of ozone. This is germicidal UV-C in its purest form. There was no quantifiable output when tested. It’s safe to use in the home or at work.