PAY ATTENTION TO THE COLOR OF THE STOVE FLAME

A lack of oxygen in the room can cause a color change. The gas contains butane, which, in the presence of sufficient oxygen, burns completely, producing carbon dioxide and water. In this case, a blue flame is visible on the stove. However, with a lack of oxygen, butane burns incompletely, producing a toxic gas called carbon monoxide. In this case, a yellow-orange flame is visible.
Therefore, always open doors and windows in the room where you are cooking to allow oxygen to enter.