My water is supplied by a private well. When my clothes washer is filling with water, there is a significant sulphor smell. I don't smell it anywhere else in the house. Should I have my water tested, washer checked or is this just a normal occurrence from a well?

Yes, sulphar in water from private wells is not uncommom at all. There are some places in MO where I lived as a youth that the water from the public supply smells so bad.