I had a serious kitchen fire years ago. The ins. company sent in a company that cleaned all the SURFACES. They didn't clean inside the coffee pot, nor inside the cupboards. Learned in time that even the Grandfather Clock was affected and had to be taken in. Don't wait for the ins. company to tell you to do these things -- YOU get in and insist everything is cleaned. Including the furnace/AC unit -- and the ducts. Also, we had to repaint our kitchen --- found the soot was in behind the hinges!!!!! So remove all hinges/handles and clean. It's a pain but it worked!! Two years later we put the house up for sale and NO ONE knew we'd had a fire. I admitted it but everyone said you couldn't smell smoke at all.
Good luck!!!!