Sour Bomb
You can mix ingredients with a powerful sour smell into an alchemical bomb to make its explosion an overpowering stench. Any creature hit by the bomb must attempt a fortitude save against your class DC in addition to the bomb's normal effects.
Success The creature is unaffected beyond a strong craving for pickles.
Failure The creature is Sickened 1.
Critical Failure The creature is Sickened 2, and Fleeing for 1 round from the smell.
Traits
Feats with the additive trait allow you to add special substances to alchemical consumables you create when you use Quick Alchemy to create a consumable (you can't use additives with quick vials). You can add only one additive to a single alchemical item, you can add an additive only once per round, and most additive abilities specify a subset of alchemical consumables you can add them to.
This indicates abilities from the alchemist class.
An olfactory effect can affect only creatures that can smell it. This applies only to olfactory parts of the effect, as determined by the GM.