diagnostic clues
Last reviewed 02/2023
- more than one person living in house affected;
- symptomatic improvement when away from house e.g. whilst on holiday.
- symptoms worse in winter when heating in use;
- symptoms worse when cooker being used;
Signs that may be present include:
- black sooty marks on wall around fires, boilers, stoves;
- black sooty marks on gas fire radiants;
- gas appliances burning with yellow flames rather than blue;
- accumulatioon of smoke in rooms due to faulty flues; it is not possible to smell carbon monoxide but you can smell other combustion products.