Kutsatira kuyaka kwathunthu, zotsalira zokha ndi carbon dioxide ndi madzi. Ngakhale mpweya woipa ukhoza kuyambitsa kupuma, kuyaka kosakwanira kumapanga carbon monoxide, mankhwala oopsa. Komanso, ma hydrocarbons amatha kuyaka kosakwanira, kuthekera kosintha mpweya woipa kukhala carbon monoxide.
Zizindikiro zazikulu za Carbon monoxide poisoning ndi chizungulire, mutu, ulesi, ndi mkhalidwe wonga kuledzera, kukhudzidwa kwambiri komwe kumatha kukomoka.