Benefit: The effects of the smoke created by an alchemist’s bomb duplicates the effects of cloudkill instead of fog cloud, filling an area equal to twice the bomb’s splash radius for 1 round per level.
Does an alchemist’s inferno bomb, poison bomb, smoke bomb, or stink bomb cause bomb damage in addition to the special effect listed for those discoveries?
Yes. For example, a smoke bomb deals bomb damage and creates an area of smoke.
Advanced Player’s Guide. Copyright 2010, Paizo Publishing, LLC; Author: Jason Bulmahn.