You may not know this, but formaldehyde could be one of the many pollutants in your home causing irritation to your eyes, nose and throat. Existing air purifiers remove the compound from the environment by using activated charcoal, but that process simply traps formaldehyde and you’ll have to replace filters to keep the system working. Dyson has found a way to continuously destroy the pollutant altogether in its new Pure Cryptomic range of purifiers. They’re available in fan and fan-and-heater models for $650 and $750 respectively, and are based on the existing Pure line. Like last year’s Pure Cool tower fans, the Pure Cryptomic devices can automatically detect and capture pollutants in the air in your home, and even do so without blowing air at you. An LCD panel on the new Cryptomics will show you particle and gas readings, as well as how much longer your filter will last before it needs replacing. The combination filter in use here will trap about 99 percent of various particles and “volatile organic compounds (VOCs)”, according to Dyson. But what’s new this year is the Cryptomic technology panel that converts formaldehyde at a molecular lev...