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cookerg t1_j2nm0d5 wrote

You must mean carbon monoxide, CO. That is potentially lethal. Is your furnace vent blocked? You might need an urgent inspection by the gas company or even fire dept.

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East-Worker4190 t1_j2pujht wrote

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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