I was in the Zalesie in one of the buildings when the server did a routine shut down at 11:45 Eastern. About 20 minutes later I logged back in and was informed by the game that I had been moved from a dangerous area. Not knowing where I was I started making my way down the hill into Zalesie. It was night time and I have night vision goggles. With the goggles on or off I could not see any problems. So I headed for one of the buildings and I started to cough and bleed. It was at that moment I could see the toxic gas. I retreated tended my wounds and then had another look at the situation. I picked another location further down and tried to enter the town again, and again, I was attacked by the toxic gas and could see it at that point. But when I back out it disappears.