A carbon dioxide scrubber is a device that helps to clean the air by removing carbon dioxide (CO2) from it. It works by passing the air through a series of filters that absorb the CO2 out of the air, leaving only the clean air behind. The CO2 is then stored or removed from the air so that it does not enter the atmosphere. This helps to reduce the amount of CO2 in the air and contributes to making our air cleaner and healthier to breathe.