Smoke is Nagor's dog in Fallout 2.
Smoke wandered off into the wilderness and Nagor wants the Chosen One to find him. He can be found in the Arroyo hunting grounds.
Effects of player's actions
If the Chosen One takes too long retrieving the G.E.C.K. after rescuing Smoke, Aunt Morlis will kill and cook the dog to feed her family.
Smoke appears in Fallout 2.