This is a fairly grotesque question, so I do apologize for that, but I've also found it troubling and would like to figure this out. A week or so ago, I stayed over at my parents due to not seeing them in quite awhile. I ended up staying in the guest room and fell asleep just fine. However, my mother came into the room while I was asleep to take my clothes from the previous night and wash them, but she didn't get very far. She later told me when I woke up, that there was a putrid, acidic smell that engulfed the room when she went it. She described it as the smell of "dog vomit" and even went as far as to scold her dog and this theory would work except for the fact that her dog passed away almost a year ago. So, after realizing this, she went on to tell me that she believed it was dog vomit because she managed to find the source of this smell. She showed me the sheets I was laying on and to say the least, it was a concerning sight. There was a small puddle of bright pink, foamy liquid with chunks of an indistinguishable substance. The chunks were tiny, but were semi hard and it truly did look like vomit, however the concerning part came from the location. The puddle was behind my legs, indicating that it came from my anal cavity. I've been searching on an off for an answer and I'm finding lose connections but nothing solid. I would appreciate any help with this.