An electric oven does not release carbon monoxide. Because electric ovens do not use combustion as a source of energy, there is no risk of carbon monoxide release or buildup, because there is no carbon monoxide involved in the process. That said, an electric oven is still at the same risk of catching fire as their gas counterparts, so keep that in mind. Electric ovens also pose the risk of electrical malfunction, which can cause the inside of the oven to catch fire.