Issues such as carbon monoxide poisoning can be fatal but many people are not aware of the warning signs, particularly older people, who may put flu-like symptoms or simply feeling drowsy down to old age.
Symptoms of carbon monoxide poisoning include:
Shortness of breath
If your carbon monoxide alarm sounds or you suspect a leak:
Stop using all appliances, switch them off, and open doors and windows to ventilate the property
Evacuate the property immediately; stay calm and avoid raising your heart rate