I'm not trying to downplay the pollutants from incomplete burning of methane (or other gas) combustion. I'm trying to highlight that it isn't the only consideration when discussion policy or making personal decisions.

Cooking with an electric heat source will produce an equal amount of pollutants from burning oils and organic matter compared to a gas heat source. But a methane or other gas heat source will produce additional (and different) pollutants. Ventilation is important in both scenarios.