Fireplaces, Heating Stoves, Flues and Chimneys - smell from fireplace

I have a double "see-through" fireplace that has a smell that I can't get rid of. I haven't even lit a fire in it since I had both flues relined. The problem was caused by the previous owner installing a wood burning stove, which caused a fire in the chimney.

I have also installed the "pop-top" flue shutoffs on the top of the chimney, which are closed as tightly as feasible. The chimney itself is a limestone, rather than brick chimney. Any ideas how I can solve this? Is there anything to neutralize or seal the odor in? The fireplace itself still has considerable smell, even after I spent several hours wire brushing the carbon, etc. away. I did what I could reach in the smoke chamber, but there is still a lot of junk in there.

thanks

Place a pan of of something to absorb odors inside fireplace can help with reduction of fireplace odors. Baking soda, kitty litter, activated charcoal from pet store, and coffee grounds absorb odors. Hearth stores sell fireplace deodorants. No matter how clean the fireplace and chimney, creosote particles remain in porous masonry and stone.

Closed dampers and glass fireplace doors can still leak some air and allow air to be drawn from chimney into the home. When air is evacuated from the house, it can pull air from the chimney and its odors into the home. Negative air pressure in tightly built homes can cause negative air flow from chimney. This can occur when running exhaust fans, central air or vacuum, combustion appliance flues for water heater or furnace, other vents such as in bath, kitchen, or laundry. Providing an additional source of air can help. Try cracking a window or door and see if the odor problem is resolved. This process is explained here: http://www.chimneysweeponline.com/hosmell.htm