Which of the following is a common hazard associated with gas appliances?

Carbon monoxide poisoning is a well-documented and significant hazard associated with gas appliances. Gas appliances, such as furnaces, water heaters, and stoves, produce carbon monoxide (CO) as a byproduct of combustion when they burn fossil fuels like natural gas or propane. If these appliances are not properly vented or maintained, incomplete combustion can occur, leading to the release of dangerous levels of carbon monoxide into living spaces.

Carbon monoxide is a colorless, odorless gas that can be particularly insidious, as individuals may not realize they are being exposed until symptoms of poisoning manifest. These symptoms can include headaches, dizziness, confusion, and, in severe cases, can lead to unconsciousness or death. Regular maintenance and proper installation of gas appliances are essential for ensuring their safe operation, including checking for venting integrity and ensuring combustion is complete.

While overheating, electrical shock, and physical injuries are risks associated with many household appliances, they are not specific hazards unique to gas appliances. Overheating can occur in various devices that depend on electrical or mechanical systems, electrical shock is primarily associated with electrical appliances, and physical injuries from falls could happen with any type of home equipment. In contrast, carbon monoxide poisoning is intrinsically linked to gas-burning appliances, making