+**Exhaust** is the spent [Gas](/wiki/gas) expelled after a process, typically from an [Engine](/wiki/engine) or furnace. This flow carries away unwanted byproducts and heat, dispersing them into the atmosphere.
+## See also
+- [Combustion](/wiki/combustion)
+- [Pollution](/wiki/pollution)
+- [Muffler](/wiki/muffler)
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