I've found that european shit smells far worse than american shit. In the following order ranked from mildest to most rank:
1. Spanish. No question. Simply Disgusting. I lived with a guy at an international engineering house (like a frat house for dorks) with a guy from spain that would literally consume an entire bottle of ketchup with dinner. He would routinely clog the toilet with horrendous crap that was the consistency of chocolate pudding yet smelled like pure rotten eggs
2. French. Almost as awful as spanish.
3. German. These fucks eat pickled herrings and sour cream as a meal. The smell could knock down a horse.