Avoiding carbon monoxide poisoning

Ingrid told me a story. She holds with the majority view that telephone sales people should be made to run around dripping wet wearing only a towel to see how they like it. One day though a chap phoned trying to sell a combined electric and gas supply package and Ingrid positively welcomed the call. She was enthusiastic. She would be delighted to take advantage of the offer. By Ingrid's account the man handled the unexpected situation well. He remembered his training and kept on extolling the virtues as he completed the draft contract. It all fell apart at the address stage though. Ingrid lived in an old half timbered cottage with green wellies in the porch and a big red Aga in the kitchen. "Aah, I'm afraid we can't offer piped gas to your location," said the salesman, "your house is too rural." "I know," said Ingrid, "why didn't you?" Then she put the phone down. There's no piped gas in Culebrón either. Piped gas in Spa...