The cobra fang strike reads as follows: "These deal 1d4 poison damage; are in the [brawling] group; and have the [agile], [deadly d10], [finesse], [nonlethal], [poison], and [unarmed] traits."
Poison reads this: "An effect with this trait delivers a poison or deals poison damage. An item with this trait is poisonous and might cause an affliction."
Can cobra fang strikes apply afflictions such as a injury poisons? If so then what kind poison can it inflict? I think the idea of making an enemy roll a saving throw after being hit is a cool idea, but I don't think it works in RAW.