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How Long Does It Take For Carbon Monoxide To Leave The House? [Solved]
Carbon monoxide levels must build up in your home before an alarm goes off. Since an alarm measures the amount of carbon monoxide over a certain period, it could take your detector hours to go off or 10 or 20 minutes if you have a lot of gas building up in your home.
How long does carbon monoxide stay in a house?
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NBC Nightly News With Lester Holt.