Place drop cloths over the entire floor and all of the furniture that you are unable to carry out of the room. The fireplace removal process will create a lot of pervasive dust.
Put on gloves, goggles and a dust mask. These are essential to protecting your eyes and face from shards of brick and mortar.
Place the end of a chisel in between the edge of a brick and the mortar. Choose a brick on the top of the fireplace.
Hammer the brick with a sledgehammer. Use the heaviest hammer you can handle, as the extra force will make your job easier.
Move the chisel along the edge of the brick, hammering as you go to dislodge the brick.
Continue the process, working from the top of the fireplace to the bottom, until you remove all of the bricks.
Place the bricks in a wheelbarrow and move them out of your home. This will prevent the mold spores from moving to another area of your home.