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title: CO₂
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![CO2@1x](https://faq.airthings.com/hubfs/00_App/CO2@1x.png)

 CO₂ is harmless in small quantities, but as levels rise it can affect productivity and sleep.

To lower CO₂ levels, try simply opening a window or a door to the room you are in to generate more airflow.

[Learn more](https://www.airthings.com/what-is-carbon-dioxide)