After that first crowded day I retired to one of those green-tiled sanctuaries and lathered myself with a new bar of a famous toilet soap which Helen had put in my bag. I have never been able to use that soap since. Scents are too evocative and the merest whiff jerks me back to that first night away from my wife, and to the feeling I had then. It was a dull, empty ache which never really went away.