Does a shit smell worse than a fart or a fart worse than a shit? There are many factors that can mask or musk the vile fragrancy of either in any given situation, but has a controlled study been done to objectively determine the most stank?
Sulfuric and skatole compounds could be tested and rated in the gas and scat, but ultimately the sense of smell is subjective. Is stank stinky to fart fanatics or coprophiliacs? Could be a spoiled vs fine wine scenario.
Personally, I’ve gotta go with shit. It stinks! Often. However, I also believe farts are potentially more lethal in essence.