a good friend mistakedly vented a dryer into a otherwise unused
chimney. over time it plugged with lint and the dryer finally
overheated and shut down.

it took me 30 seconds to understand his trouble, I asked WAT were you
thinking?

he changed the vent and never dod understand the problem even after
looking at the totally lint plugged vent......

it should all go up thru the roof?

he just didnt get it