Probably not. You'd have to leave the flue open (there goes heating/cooling) and regularly pay to clean it to make sure nothing nested inside or it won't vent.

Probably not. You'd have to leave the flue open (there goes heating/cooling) and regularly pay to clean it to make sure nothing nested inside or it won't vent. They don't smother either, so airtight boxes are out too. Focus on fire suppression/escape strategy. The one that burns your house down is going to be some freebie gadget someone else lost in your couch, that you didn't know about to account for.