I have a fireplace with a heatalator insert. The problem is from the vent of the heatalator into the room a musty odor comes out. My house was shut up for a long time and the entire house had a similiar smell which we were able to get rid of with lots of cleaning and new paint. I have tried some household products in a spray bottle to see if they would work but have had no success. The only way I can use the fireplace is if I block the vents off. So what I am tring to find out is if anyone knows of any products that would get rid of the smell which is coming out of the brick.