The All Party Parliamentary Gas Safety Group's inquiry into carbon monoxide (CO) also estimates that 200 people are admitted to hospital annually with CO poisoning, while at least another 4,000 suffer from low level effects.
The whole problem costs the NHS £178 million a year, found the inquiry.
Baroness Finlay of Llandaff, who chairs the group, said: "Low-level carbon monoxide poisoning is a constant risk to us all. Because the gas is so difficult to detect, and the symptoms such as headaches so common, many people may be poisoned without knowing it.
"Moreover, a crude calculation suggests that the effects of such poisoning are currently costing the NHS £178 million a year."
She urged people to install CO alarms so they became as common as fire alarms.
"One take-away cup of coffee costs more than one year’s protection by a CO alarm," she said.
source: telegraph.co.uk
