Meet the Keyco Air: a plug-type WiFi enabled air quality monitor that lets you test your air for toxic chemicals, humidity, and temperature. It has LEDs to visualize air quality. It also plays well with SmartThings and Alexa.
The companion app sends you real-time notifications about air quality and lets you customize settings. Keyco Air is smart enough to detect methane, black carbon, nitrogen dioxide, aldehyde, and other dangerous chemicals.