Always confirm information before making software, design or purchasing decisions.
✅3V
Datasheet: https://ams.com/documents/20143/36005/CCS811_DS000459_6-00.pdf/c7091525-c7e5-37ac-eedb-b6c6828b0dcf
Adafruit: https://www.adafruit.com/product/3566
Sparkfun: https://www.sparkfun.com/products/14193