Benzene and 1,3 Butadiene Benzene and 1,3 Butadiene are carncinogens. The risk is related to overall lifetime exposures. At the levels stated by the Government's Expert Medical Advisory Panel, the risk to health is very low. Carbon Monoxide This can have an effect on mental activity and can worsen existing problems that affect the delivery of oxygen to the heart and lungs. Lead Lead can affect many different parts of the body, including the production of blood, the nervous system and mental functioning.
Children are most susceptible.
Ozone At its highest levels in the UK, some people can experience discomfort and coughing, especially whilst taking exercise. It can inflame the airways, make eyes and throats sore and increase sensitivity to allergens e.g. Pollen. People who suffer from asthma do not appear to be significantly more sensitive to ozone than other people. At high levels, Sulphur Dioxide is an irritant that effects nerves in the lining of the nose, throat and lungs airways. This, in turn, causes a cough and feeling of chest tightening and may lead to a narrowing of the airways.