Are Poison Types Immune To Poison?

Question

Are Poison Pokemon Immune To The Poison Effect

Answer 1

Yes, all Poison type Pokemon are immune to the Poisoned status unless if Salandit or Salazzle has the Ability Corrosion and uses a move like Toxic that can Poison the foe. The same thing applies with Steel types.

Source: Experience and Knowledge
Hope this helps :)

Answer 2

Yes. Except if the poison is inflicted by Salazzle/Salandit.

Source: Experience