We purchased a home w/ a double sided fireplace. It works well on the dining room side which has a screen but the living room side, which has glass doors, leaks smoke whenever the forced air heat comes on as the intake for the heat system is about 12 feet away from the doors.

Don't want to turn off the heat every time we have a fire so need a better solution.

Wondering if replacing the old glass doors (installed when house was built in 1971) with air sealed fireplace doors will resolve this problem.