Corruption Venom?

i got this bottle of poison called corruption venom which is untradable.
is it a removed item from a quest or used for something later on?
1% quest left (amazing voyage)

 

How did you get it

 

killing a random spider in light forest

 

I assume it's for a quest later on

 

This potion is not used for any known quest that I am aware of. Also, there exists a cave in the Dark Forest with mobs called Escaped Devourers that also drop similar potions.

 

Dude me too I got it while getting to do a quest and randomly killing something( forgot ) and got that venom that give u poison I remember for 22 sec

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I also got a drop from the hostile villager in the black bird from the passport quest and it dropped a LEATHER VERSION of the gert mask that is suppose to be crafted by the dude in the quest

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And it actually works