Unless you were paranoid and thought the cops might happily plant something and then "oh look what we just found right here under the sofa cushion! Book 'em, Danno!".
Saddam was clearly very paranoid. But in this case perhaps reasonably so. He knew we needed to get our troops out of Saudi Arabia, and having an excuse to park them in the western desert of Iraq for oh say the next 50 years or so fits into our political and economic needs. So he may have figured that if he did let in a whole mess of "inspectors" without any restrictions they just might find something that wasn't there to start with. I am not saying that this would have occurred, but I am saying he could logically have concluded that it would occur.
The inspectors didn't go anywhere without "minders". If Saddam was paranoid, but knew he had nothing to hide and wanted the sanctions lifted, he could have assigned 3 minders to every inspector, each with a video camera.
If he were any more paraniod than that, he would have NEVER even allowed the inspectors in the country.