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(CO) poisoning. CO is an invisible, odourless, tasteless and extremely toxic gas. It is
produced by appliances and vehicles burning fuels, such as coal, oil, natural/bottled
gas, paraffin, wood, petrol, diesel, charcoal etc. CO is absorbed by red blood cells in
the lungs in preference to oxygen - this results in rapid damage to the heart and brain
from oxygen starvation.
High levels of CO in a house can be caused by:
• Incorrectly or poorly installed fuel-burning appliances.
• Blocked or cracked chimneys/flues.
• Blocked vents or draught-proofing which makes areas with fuel burning appliances
or fireplaces airtight.
• Engines of cars, lawnmowers etc. left running in confined spaces.
• Portable paraffin or gas heaters in badly ventilated rooms.
2.2 Symptoms of Carbon Monoxide Poisoning
Most people know that high levels of CO are harmful, however the period of exposure
is also important.
The following symptoms are related to Carbon Monoxide poisoning and should be
discussed with all members of the household.
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