I bought an Awair device in 2020 when my wife and I were working from home full time in the same room, out of curiosity as to whether our office area air was accumulating lots of CO2 during the workday (turns out this is not really an issue in drafty 120 year old houses).

In the time since I’ve found it helpful for: confirming my DIY air purifier was effective during wildfire smoke periods, having a reminder to open the windows generally when the air gets stale and particularly after cooking, learning that cracking a window for makeup air for the range hood makes it much more effective, getting better about trimming candle wicks and snuffing them instead of blowing them out, getting a sense of our actual temp and humidity comfort ranges and how they differ from thermostat settings, and realizing that induction really might be preferable to gas whenever we’re looking to buy a stove in the future.