Which term describes the constructed pathway for smoke and gases in a chimney?

The term that describes the constructed pathway for smoke and gases in a chimney is the flue. A flue is specifically designed to safely channel combustion byproducts from appliances, such as fireplaces and furnaces, to the outside atmosphere. It plays a crucial role in ensuring proper venting, maintaining draft, and preventing the buildup of hazardous gases within the living space.

While the term "chase" pertains to the structure that encloses the flue, it does not describe the pathway itself. "Pipe" can refer to various conduits but is not specific to the context of chimney venting. "Outlet" is quite generic and does not adequately capture the purpose or function of the flue in the chimney system. Thus, the use of the term flue accurately encompasses the function and structure needed for safe and efficient venting of smoke and gases in chimney setups.