It then interferes with the hemoglobin's ability to supply tissues with the oxygen they need to function. Individuals most sensitive to carbon monoxide exposure are heart patients, people with lung problems, and people with blood problems such as anemia. Symptoms of carbon monoxide exposure may be increased length and frequency of chest pain for those with heart or other circulator problems. Other people may experience headaches, dizziness, lack of concentration, fever, or nausea. Mood swings, irritability, or behavioral changes can also be symptoms of relatively low exposures to carbon monoxide.
Higher exposures can result in aggressiveness, loss of consciousness, and death.
The vehicle Emission Check Program. This program is required in urban areas of King, Pierce, Snohomish, Spokane, and Clark counties. It helps reduce air pollution from vehicles by identifying the most polluting vehicles and requiring their proper repair. The oxygenated gasoline program has recently been phased out in central Puget Sound and Clark County due to air quality improvements in those areas. Major employers in the largest counties are required to have programs to reduce drive-alone commuting by their employees.