Carbon Monoxide

Due to several tragic incidents across Cornwall involving Carbon monoxide (CO) poisoning, we have produced some advice and guidance for businesses and members of the public.

What is Carbon Monoxide?

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CO is a colourless, tasteless, odourless poisonous gas produced by the incomplete burning of carbon based fossil fuels including gas, oil, wood and coal. Some appliances which can produce carbon monoxide include gas boilers, cookers, heaters, open fires, wood burners and oil fired boilers.

Signs of CO

Look out for gas appliances burning with a yellow/orange flame that’s normally blue. Also look for extra condensation, pilot lights blowing out, soot and/or yellow stains round appliances.


Being mistaken for flu, viruses or even food poisoning, the most common symptoms include:

  • nausea
  • headaches
  • dizziness
  • tiredness and feeling disorientated

If someone is suffering from these symptoms whilst at home but is fine elsewhere, they may be suffering from CO poisoning.

Download and print the below flyers and hand out to your visitors:

The Service hopes that you take the time to consider this very important safety issue and join us in making Cornwall safer.

  • Evacuate the property
  • Dial 999 and ask for the Fire Service, stating potential carbon monoxide poisoning
  • Do not re-enter the property at anytime