Proudly American
Describe the combination of conditions
Record which equipment was already running, whether doors or windows had changed position and whether this was a new problem. Mention recent weatherization or ventilation work if known. Do not light another fire simply to test combinations; an existing observation is enough to start the discussion.
Air movement is a whole-home question
CSIA describes how pressure differences can draw air down a chimney. EPA building-upgrade guidance also treats combustion and indoor-air concerns as matters for professional assessment. A chimney, exhaust equipment and building changes can interact, so the review may need more than a single component replacement.
Separate immediate response from a lasting solution
Opening a window should not be presented as proof that the underlying issue has been corrected. Do not use an improvised workaround to justify another fire. If a carbon monoxide alarm sounds, move everyone outside and call emergency services from safety; do not wait for a routine appointment.
Prepare a concise smoke history
Describe where smoke appeared, when it began during use and which changes preceded the first event. A service request to ClearHome should distinguish visible smoke during a fire from an odor when the fireplace is cold. Those are related observations but not necessarily the same investigation.