It was natural gas, so whatever mix local gas company used. Plus carbon monoxide. CO was intermittent Depending on stove usage and furnace usage. (Two sou

It was natural gas, so whatever mix local gas company used. Plus carbon monoxide. CO was intermittent Depending on stove usage and furnace usage. (Two sources) Gas was from faulty pipe cover. We talked to a lawyer just after. Said we didn’t have enough medical documentation. A year later we had tons, but lawyer wouldn’t do anything since doctor wouldn’t testify. Eventually gave up.