Need a good nose for chimneys

I posted on this before but have not been able to solve the problem. Every summer, we get a weird sooty smell in one bedroom. That bedroom has a non-working fireplace that has been capped up at the roof. The fireplace shares a chimney with two other flues, another for another nonworking fireplace (also capped at the roof) and one for the boiler flue, which was relined and is obviously not capped. Based on recommendations here, we brought out someone from A&A to smell the chimney. We thought if we uncapped it and put one of those propeller-like vent gizmos, that might make the smell go away. The A&A guy couldn’t smell the smell (it was late September and thigns were cooler) and did not recommend uncapping the chimney. The boiler is not the source because we do not get the smell in winter. We only get it when the weather is quite warm, and only in this room, not in the other rooms above and below that share the chimney.

So what do we need? A second opinion from a chimney contractor? A chimney sweep? Any thoughts? Referrals? We want to get someone in here while the weather is hot and the smell is strongest to diagnose the problem.

Much thanks.

By slopefarm |