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What is Carbon Monoxide and how can I keep Safe?


CO - The Silent Killer

You can't see it, smell it or taste it, that's why its known as the silent killer. However, it's important you can spot the signs and symptoms, and know what action to take if you suspect CO.

Alongside the very real dangers of carbon monoxide poisoning, living in a shared house for the first time poses its own situations you'll want to avoid...

campus killers

Johnny Kills the Party

Like Johnny, CO is tasteless and causes nausea.

campus killers

Sarah Kills your Peace and Quiet

She should come with a warning.

CO does – but only if you have a CO alarm.

campus killers

Curtis kills the vibe

Don’t live in a toxic environment.

You can’t change Curtis, but you can make sure your appliances are CO safe.

campus killers

Molly Kills the Mood

If there’s an unwanted presence, make sure its just your housemate.

Spot the signs of a CO leak.


Everything you Need to know

What is CO?

  • CO is a highly poisonous gas that is produced by the incomplete burning of fossil fuels (including gas, oil, wood, petrol and coal)

  • You can’t see it, smell it, hear it or taste it – that’s why it’s known as the ‘silent killer’

  • CO doesn’t just come from gas appliances, it can occur from any fossil fuelled appliance, such as log fires, coal fires or even charcoal barbeques

Signs of CO on gas appliances;

  • Staining on appliance casing or surrounding walls/decoration

  • Yellow floppy flames

  • Soot deposits

  • Excess condensation in a room when an appliance is in operation

  • General poor condition of appliances

What are the symptoms of CO?

  • Headaches

  • Nausea

  • Dizziness

  • Breathlessness

  • Collapse

  • Loss of consciousness

Other useful links & info


If you’re worried about CO in your property or if someone is experiencing symptoms, follow these steps;

Open all doors and windows

Move everyone into the fresh air

Call the Gas Emergency Service on 0800 111 999 or via textphone (minicom) on 0800 371 787

Act now

Here are a few things you can do right now to start keeping you safe


For more information about carbon monoxide, please visit;

The Priority Services Register (PSR) helps energy companies identify customers who need priority support in an emergency, find out more here;

And for general information please visit;