I absolutely love my job (semi-retired, now) as a decorator and, for a number of years, i decorated for a local landlord who had a large number of properties on his portfolio. And i have to admit that some of those houses did affect my mood to an extent where i was glad when the job was done and i was out of there. I'm definitely not talking ghosts or the feeling that something 'bad' had taken place. It was just more a feeling of unease. Can't explain it and, to be totally honest, such instances were quickly forgotten when i moved on to the next job.