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Carbon monoxide alarm went off: what to do

You cannot see or smell carbon monoxide. Get everyone out first, then call for help.

21 items · 5 sections · home, safety, emergency, first-aid

Start this checklist

Right now (4)

  • Get everyone out into fresh air, and pets if it is quick
  • Turn off the appliance as you go, only if it is safe and on your way
  • Leave at once, even if you feel fineCarbon monoxide has no smell or colour.
  • Meet outside and count everyone

Call from outside (4)

  • Call emergency services: 911 US, 999 UK, 112 or 101 fire India
  • UK gas appliance: also call the free Gas Helpline, 0800 111 999
  • Say a carbon monoxide alarm went off, and if anyone is unwell
  • Do not go back in until responders say it is safeAn alarm that stops does not mean the gas has gone.

Get medical help (4)

  • Trouble breathing, chest pain, confusion, weakness or passing out: emergencyDo not drive yourself. Call an ambulance or ask someone to drive you.
  • Headache, dizziness, nausea, tiredness: get checked promptlyThey may feel like flu, and ease outside.
  • Tell them you may have breathed carbon monoxide
  • Pregnant women, babies, older people and those with heart problems: get checked

Before you use it again (4)

  • Have the fuel appliance checked by a registered engineer
  • Keep the appliance off until it is cleared
  • Have flues and chimneys checked and cleaned
  • Tell your landlord, if you rent

Stop it happening again (5)

  • Fit an alarm near bedrooms, and in rooms with a fuel-burning appliance
  • Test alarms and check batteries regularly, and replace by the date on them
  • Short chirp? It may be a low battery. Unsure? Treat it as an alarm
  • Never run a car or generator in a garage or indoors
  • Never use a barbecue, camping stove or gas oven for heating indoors

Written from www.nhs.uk

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