Hi folks i have a camray 5 combi sited in the utility room. the room always smells quite strongly of oil. I have checked it thoroughly for leaks, none found. I have carbon monoxide sensors in the room which do not detect anything (i Know carbon monoxide is odourless) so i am assuming combustion is as it should be. Any ideas as to why the boiler gives of such a strong odour, or any ideas on how to neutralise the smell. Any help most appreciated.