Of the snail and the skunk, the skunk is the one that smells bad.
the skunk, the snail —The–Classification
oder (N) – a smell, often an unpleasant one;
fragrance (N) — a pleasant smell as with flowers or perfume
Nordsieck, Robert. "The Living World of Molluscs". Web. 18 Jan 2015. <molluscs.at>.
Wikipedia contributors. "Skunk." Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, 21 Jan. 2015. Web. 23 Jan. 2015. <wikipedia.org/wiki/Skunk>.