A COUPLE are warning about the silent killer - carbon monoxide - after a lucky escape.

Deadly fumes killed George and Norma Brown's four- month-old poodle, then knocked them out.

The couple had contacted their daughter, Michelle Thompson, after discovering the dog's body.

She went to their house in Longford Street, Middlesbrough, and found her parents had collapsed.

They were taken to Middlesbrough General Hospital and transferred to the BUPA Hospital for Hull and East Riding, spending four-and-a-half hours in a decompression chamber.

Mrs Brown said: "It came on so fast and we had no idea what was wrong; it completely wiped us out."

The Health and Safety Executive is investigating