My washing machine has a mildew smell. I can't see anthing that is causing it how can I get rid of it? I have a Kenmore front loading washer,

Although you can't see anything, there's clearly something there. You need to open up the washer and locate the cause of the smell and clean that out. Bleach will kill mold/mildew.

Look for a manual at:

http://homeappliance.manualsonline.com/ex/thread/view/idThread/1499622

Or Google your model number and locate a manual (parts manual, for exampe) for it. The manual should tell you how to open up the washer, or provide a diagram.

How to Control Mold in a Front-Loading Washer | eHow.com (http://www.ehow.com/how_2057785_control-mold-front-loading-washer.html)