I have data from my new dyson purifier that I installed in a 3D printing room since I could smell a lot of contaminants. The Dyson purifier was working well and it showed that the PM2.5 levels were 0. However, I could still smell a lot of the contaminants. To make sure that I am interpreting the results accurately, I wanted to ask what the sensor is supposed to depict. Does it depict the quality of the air that it exhausts or does it measure the air quality of the air that it takes in? How accurate is the sensor and does it also reflect the AQI for the entire room accurately. The printing room that I placed it in was about a 100-150 sqft. Thanks!