My roommate leaves poop stains everywhere?

This is a serious post. I just met this roommate this semester, and had no clue who they were up until we first met. They were randomly selected by Housing. However, since August, I’ve been noticing little poop stains everywhere: on our couch, on our toilet seat, maybe even a couple little smears on our bathroom walls. I normally just clean them up and continue on with my day. I looked on their bed and found a stain too. I haven’t really been saying anything about it to my roommate though, because they’re a neurodivergent male to female transgender person, and I don’t want to seem like a bigot or anything like that, as a straight woman. What should I do? The stains are really noticeable and I get worried others might see them.