I will say just this.
I searched the internet, and the only reference I could find to this is a paper done in 2009 that found that in NY City, a lot of sushi bars had this issue with tuna.
You’d think if millions of people were getting oily discharge from their butts, there would be at least one article about it in the news.
Oh, there were lots of web references to this story, but they were all on the PETA and vegetarian websites.
Apparently it’s “taboo” to talk about. My bff and I call it ELP....emergency liquid poo.
Their family eats lots of fresh fish, especially salmon.
Try talking to people about ELP.....they walk away quickly, lol!