stuck on foggy business quest.

[FallRivers]

me and my homie came along the quest and just wanna know what we're supposed to do about the fog. we've tried running through it with poison resistance with no luck (though we made it pretty far in), and we've explored where there is no fog but didn't find anything.

[GrimToadstool]

That's the bog fume thing, right? If you've cleared the first two towers, go to the vantage point and speak to the npcs there.