Bob, have you changed aftershave scents..deodorant...toothpaste...mouthwash...soap...or you by the computer...drives...etc...Many times it is not the obvious that sets them off, but "tiny" things we don't pay attention to, but drives these kids crazy....just a thought. We had a little one that went ballistic everytime we took him to the cafeteria, and it was not the noise, but a cleaning closet that we passed on the way and you could barely smell the mop, but it set him off.