Hmmm. It's 1.15am and I have all the windows open. I'm waiting for the emergency gas engineer to arrive - it could be anytime in the next 2 hours.
For some reason, just before going to bed I looked up and saw a grey splodge on the carbon monoxide detector over the gas boiler. So I phoned the emergency number to ask what to do. It's an emergency and someone has to come out.
Carbon monoxide is nasty because it doesn't have a smell and it can kill. According to a list of the symptoms of carbon monoxide poisoning, I've had some of them over the past two or three weeks. They go away when I go outside or am away from home, and come back when I'm in the house.
I put it down to stress because of Dez's death - it's only six weeks since he went - but perhaps it has another cause. The boiler should have been serviced by now but because Dez was in hospital, I forgot to arrange it until recently so it's going to be done in September.
So here I am with all the windows open, waiting.