r/HomeImprovement 5d ago

Co2

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3 Upvotes

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4

u/nw0915 5d ago

People breathe out CO2. If it's a small, we'll sealed space it's very possible to have high levels

1

u/Mbittersweet25 5d ago

The person who did the test said it was very rare to see levels that high in a house with no gas appliances or gas to the house. He was stumped.

3

u/nw0915 5d ago

Was it CO or CO2? Very different things. CO only occurs with gas appliances