Why Your Kingston Chimney Smells — and How to Fix It

A chimney that smells, especially in warm or humid weather, is a common complaint. The smell is a symptom, not the problem itself, and it has a few usual causes we see across Kingston homes.

Creosote is the usual culprit

The most common source is creosote in the flue, which gives off a strong campfire or tar odor that intensifies with heat and humidity. Summer air is warm and damp, and it draws that smell into the house. A thorough sweep that removes the creosote removes the source.

Moisture in the flue

Water getting into the chimney — through a missing cap, a cracked crown or failed flashing — mixes with soot and creosote to create a musty, damp odor. Fixing the water intrusion and capping the flue solves both the smell and the underlying damage it signals.

Animals and debris

An animal living in the flue, its nesting material, or leftover droppings create their own distinct odor. Clearing the flue and installing a cap keeps it from recurring. Fallen leaves and debris in an uncapped chimney can also decay and smell.

Negative pressure

If the smell comes and goes, your home may be pulling air down the chimney rather than letting it rise. Tight homes with exhaust fans and forced-air systems create this negative pressure, drawing flue odors into the room. Sealing the damper when the fireplace is idle, or installing a top-sealing damper, blocks that downdraft.

Why masking doesn’t work

Air fresheners and dampers only cover the symptom. Because the odor is coming from something real in the flue — creosote, moisture or an animal — the reliable fix is to remove the source, not perfume over it.

The reliable fix

For most Kingston homes it is a sweep plus a cap, sometimes with a small repair to stop water. If the smell lingers after that, an inspection finds what’s left. Either way, the goal is the same: eliminate the source so the smell does not come back.

Keeping the smell from coming back

Removing a chimney odor is one thing; keeping it gone is another. Once we have swept out the creosote that causes most smells, a few steps prevent a repeat: a good cap keeps rain and animals out of the flue, a tight-sealing or top-mount damper blocks the downdrafts that pull odors into the room, and staying on an annual sweep schedule keeps creosote from rebuilding to the smelly stage. If a Kingston home still has a persistent smell after a sweep and cap, an inspection finds the underlying moisture or masonry issue feeding it — because a recurring odor always has a physical source.

Published October 16, 2026 · Imperial Chimney Sweepers, DeKalb, IL