I say the French.

Maybe you disagree, but that's because you have never faced a wheel of French Munster Cheese, the supper secret weapon of the Franks.

No man, nation, nor dog, save those who have spent the entirety of their lives building an immunity to this substance, can come face to face with the overwhelming odor (similar to a well fermented sheep's bottom) much less flavor (more similar to a well fermented sheep's bottom) and survive.