: On the right outside wall of my fireplace I have : a square opening where a key fits in to turn on the : gas to my fake log fireplace. When I turn the fireplace : on and get my nose close to the keyhole I can smell : gas (faintly). There is only a round chrome coverplate : with this square opening. Is there anyway I can : get at this connection to tighten up the fitting? : Its confusing because other than this coverplate : everything else is enclosed in brick! This chrome plate is there to cover the hole in the floor; it should be removable. If so, you may find a packing nut loated on the valve body that you may need to tighten to stop this gas leak. If you dont find a packing nut, Id have someone from the gas company or a certified plumber repair or replace this shut off.