The similarity between the signs of carbon monoxide exposure and a cold can be confusing, as Gas Safe Register experts estimate that a staggering number of people are in danger of making a deadly mistake. BBC health expert Dr Punam Krishan is spearheading a campaign to educate the public on the differences between colds and CO poisoning, which could be life-saving. A new study showed 94% of young adults don't realise the symptoms of deadly carbon monoxide poisoning can mimic those of a cold,