Final answer:
Carbon monoxide is a colorless, odorless gas that interferes with oxygen delivery in the body, causing various symptoms and potentially leading to death. The levels of carbon monoxide can vary depending on the presence of gas stoves and their adjustment.
Step-by-step explanation:
Carbon monoxide (CO) is a colorless, odorless gas that interferes with the delivery of oxygen throughout the body. It causes symptoms such as headaches, dizziness, weakness, and nausea, and can even be fatal. The average levels of carbon monoxide in homes without gas stoves range from 0.5 to 5 parts per million (ppm). Near properly adjusted gas stoves, the levels can be 5 to 15 ppm, while near poorly adjusted stoves, they may be 30 ppm or higher.