So it shouldn't smell like smoke outside at all other than soon after a startup or reload?That smell you are noticing is something that many of us would call an industrial smell. Its a normal by product of clean burning, I would be more concerned if I constantly smelled a smokey smell. If you look at your chimney and see only heat vapors and notice that smell it means you are burning clean.... at least at that moment. Smokey smells or grey smoke should only be noticed during start ups or reloads.