Hi we moved into our new house over a year ago since then my 9 year old daughter has started suffering from migraines, it did not start straight away, aslo I have felt as though I have woken up with a cold for the last year but it gas cleared during the day. Ther most worrying thing I have found which is quite startling is that any flying creature that has entered our house4 has been dead the nexct morning. Every morning in the summer I have to move at least ten to twenty dead flies from various windowsills from my house/ Help! are these the syptoms of carbon monoxide poisening?