Leaving the area stopped the debuff (as intedned).
First time experencing this (I usually pay attention to wear my HAZMAT attire)
Also do not recall seeing something like this posted.
EDIT:
Some moving pictures of the issue. To note, I did try different combinations of head free/with helmet/with sandstorm mask all with same result. I did try only with sandstorm mask and epic flawless aquilonian Infantry helmet (!!) combinations.
I have experienced this myself and others have written of it some time ago. Have to leave area for sandstorm mask to work again believe Funcom is aware.
Meo, let me add to this, if I may. I noticed you have a thrall with you in the springs. Long ago I took a bearer with me and forgot that his pack used the same slot as breathing mask.
I was on the second pool, having cleared the first one, and the bearer dropped dead with no enemies in sight. I can only assume this was from the gas since temperature does not affect thralls.
Knowing your server probably has different settings, have you ever had that issue?
@Jim1, this is from official 1004 PVE.
I have never noticed thrall taking damage there, apart from fighting local wildlife. But also to note that I lately spend only brief periods of time there (clearing 1 pool max)
Thanks for that, Meo. I stopped using the pools because of all the brimstone that drops in Sep and I actually do not use much of it anymore. I get it from around the Pagoda and Buc bay sometimes.
We do actually have another reason to go to Buc bay that I have yet to test, but there is a new recipe in the Flotsam and it sounds like better warmth. Dralokyn also mentioned an underwater cave that has Brewing III with extra cooling there.
I may take a thrall into the pools in solo just to see if anything happens. This was so long ago, they may have patched it or my memory may be off. I do remember posting about it.
Regards
jim
PS: Private server, no mods, PvE, friendly fire is off.