Now we know. http://www.msn.com/en-us/news/offbeat/170-year-old-shipwreck-beer-not-a-good-smell/ar-AA9scEy
I liked the one comment from the article "there is little data on the chemical stability of beer over such a long time". Yea, I never think of beer as nicely aged !
Cabbage, fishy plastic, burnt rubber, over-ripe cheese, goat(?!), and sulfur. Sounds delicious!