This July, Mukilteo homeowners are calling us with one recurring question: Why does my chimney smell like a campfire long after the last fire? We’re sharing the answer and what to do next—before the summer heat peaks.
Why does my Mukilteo chimney smell like campfire in July?
Mukilteo’s coastal humidity and summer warmth can trap moisture inside your chimney flue, especially in older homes near the Sound. When warm air rises and meets lingering soot or creosote, it creates a musty, campfire-like odor that drifts into your living room. Unlike winter creosote buildup, this summer smell often signals trapped moisture or a dirty flue—not a fire hazard. If the smell lingers after a quick airing out, it’s time to schedule a flue cleaning before August humidity sets in. Homeowners near the Mukilteo waterfront or older neighborhoods with brick chimneys report this most often.
What the smell means for your Mukilteo home’s chimney health
A July campfire smell usually means your chimney isn’t drying out fast enough after spring rains or hasn’t been swept since last winter. In Mukilteo, where summer evenings stay mild but mornings can be damp, this trapped moisture can lead to rust in the flue liner or even mold on the masonry. If you notice the odor getting stronger after rain, it’s a sign your chimney isn’t venting properly. Before booking a full sweep, check for visible soot or water stains near the damper—common in homes along the Edmonds-Mukilteo corridor. A quick inspection can confirm if a full cleaning is needed or if a moisture barrier would help.