Lead exposure
Lead still harms health in Wales many years after it was removed from paint and petrol.
Carbon Monoxide (CO)
Carbon monoxide (CO) is a colourless, odourless gas and is very poisonous. It is produced when we burn wood, oil, coal, gas and charcoal for heating and cooking. CO is also produced by faulty or poorly serviced appliances.
Asbestos
Asbestos is a name given to several naturally occurring fibrous minerals.