They typically sink and they don’t have that particular scent component. Apparently, I’ve been living with bad info on buoyancy apparently because a couple decades Oprah said it’s supposed to float. As for fat intake, I cycle on and off with keto (high fat, low carb) but can’t say these farts occur during keto. I would also note it’s some scent very specific to Wendy’s nugs that I don’t smell anywhere else. Maybe it’s just a particular spice? It’s not present in the fries so I don’t think it’s specifically the oil. I appreciate your educated guess. I was hoping literally anyone else would have this experience. My wife concurs about the similarity of smells but the production is solely my talent.