About 20 years ago, I lived in privately rented accomodation. the landlord wasn`t exactly concientous when it came to repairs, & I was living with a faulty gas fire for some months. I didn`t realise that my headaches & & general malaise were down to this faulty fire until I moved out & felt much better. I realise that these symptoms were down to mild carbon monoxide poisoning, & after reading an article about this I`m wondering what the long-term consequences of mild poisoning of this kind could be. Do I need to ask my GP to send me for a brain scan?