Kenmore air cleaner

I just bought the same model and also have the smell. My previous one did not so I returned the first unit and the second units smells the same. I called Sears Customer Support and they told me that it is probably due to the factory smoke test they do on each unit. He said let it run for a few days and it should dissapate. I went a step further and am trying a new filter and if this works he said call the store and they will get me a new filter.