Final answer:
Carbon monoxide (CO) is a hazardous, colorless, and odorless gas that can be emitted by household items like gas ranges. Symptoms of CO poisoning include headaches and dizziness. Installing carbon monoxide detectors in the home is a recommended safety measure.
Step-by-step explanation:
When discussing environmental health hazards, it's crucial to consider sources of carbon monoxide (CO) exposure. CO is a toxic, colorless, and odorless gas that is released from various combustion processes. Household sources include gas ranges, unvented kerosene and gas space heaters, leaking chimneys and furnaces, and indoor smoking. Among these, gas ranges, particularly when improperly adjusted, can emit significant levels of CO, which can cause symptoms like headaches, dizziness, and nausea. For safety, it's advised to ensure proper ventilation and upkeep of appliances and to consider installing carbon monoxide detectors in the home to monitor CO levels.