You have nothing to fear from one sort of poison. In fact, you can actually drink the toxic brew in order to make your blood dangerous.
Benefit: You are immune to one specific nonmagical poison. If you ingest a dose of that poison (even if it is a contact, inhaled, or injury poison), it remains in your system for 24 hours; any creature that bites you during that time is subject to the poison’s effects.
Pathfinder Player Companion: Halflings of Golarion. Copyright 2010, Paizo Publishing, LLC; Authors: Hal MacLean and Amber E. Scott.