Sir, – The proposal that all new buildings must have carbon monoxide detectors is a step in the right direction ("Carbon monoxide alarms to be compulsory from September", Home News, May 5th), but does not affect existing buildings. Manufacturers of appliances capable of producing carbon monoxide should be required to include a built-in carbon monoxide detector – in the same way that cars are supplied with safety belts. – Yours, etc,
GERARD PALMER,
Taney Rise,
Dundrum, Dublin14.