Dyson Purifier detects Human breath as VOC

I have 2 Dyson air purifier both are new, both detect VoC from myself at night going from good air quality to fair quality in a matter of 2 hours the VOC is at number 2. Both purifier don’t detect any VOC if no human is present in the home. I feel that there way to sensitive or something not right with calibration , and I researched the entire Dyson archives. The only thing I found that this is also wide spread. Im wondering if Dyson can make some software adjustments to the Dyson app, for the VOC sensor not to be so sensitive and pick up people breath .