East-Worker4190 t1_j2pujht wrote
Reply to comment by cookerg in Something is causing CO2 buildup in part of the house- how do I secure the windows so I can ventilate it? by [deleted]
Might mean CO2. I have one of those. It is an indicator or air quality (not as deadly at the same ratios as CO). I also have may CO alarms/detectors.
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