Dear Gordon I was so sorry to hear your devastating news when we met a couple of weeks ago. I cannot imagine how you and your wife have managed to continue functioning. I have bought a CO alarm and will make sure that my childen have them too. My builder told me a scary story. His CO alarm kept going off and it transpired that it was the people downstairs who had a faulty boiler and the CO had seeped upstairs. He probably saved their lives.