[quote=Garland Gray II]Since it's an open flame, perhaps more CO2 is produced rather than CO.

Origos burn boat stove alcohol. When burned, it yields water, and carbon dioxide. BUT...it has 5% additives, to increase volatility and get around paying 100% taxes. That means it also makes a bit of nasty stuff when burned, that is also what makes a lot of the smell when burned. Oxygen depletion is the main worry...and condensation. -Ken