Find it here: https://www.sparkfun.com/products/25200
The SparkFun Indoor Air Quality Sensor - SCD41, SEN55 (Qwiic) combines two excellent indoor air quality sensors, the SCD41 and SEN55 from Sensirion™. These sensors provide a comprehensive indoor air quality sensor that measures CO2, Volatile Organic Compounds (VOCs), particulate matter (PM1.0, 2.5, 4, and 10), temperature, and relative humidity.