I was with a group of random people, just sitting in my friends(?) living room. All of a sudden the setting switched and we were all in a small room which looked like an empty pool. I remember saying I was claustrophobic (which I'm not) and then the room started filling with water. I didn't really panic until I got disoriented for some reason. To get some space I went underwater, but I couldn't get away anymore. I started panicking because I couldn't hold my breath any longer, and started breathing in. But I didn't drown. It felt like normal air entering my lungs. I do remember questioning why I didn't drown, and maybe this could've been a point where I was able to become lucid, but I just didn't notice it.