Sorry OP that someone (who probably has never been to Europe) has tried to hi-jack your thread.
As for the question, asking "What is it like to live in Germany?" is akin to asking "what's it like living in the United States," but just on a little bit of a smaller scale. As with anywhere, it would highly depend on what your job was, how much money you made, and where you lived. So a lot of it depends on what you make of it.
I do not live in Germany, but I do live in France. No, Europe does not smell. I have spent several weeks in Paris (not where I live), and the only time I smelled something was when I was on the metro. But you will get that in any big city metro, no matter the country. The train/transportation system in Europe is amazing. Definitely better than the United States. A lot of people ride bikes over here instead of cars. If you have the opportunity to go live in Germany for a year, or longer, definitely take it. You will learn a new language, get to travel a bit, and learn about different ways of life. As for the guy who said "people in Europe are secluded/reserved" or something to that effect, how on earth can you make such a sweeping generalization about 100million+ people?
There will be drawbacks of course. The biggest may be the Euro, and the cost of living. It is generally a little bit less expensive in Germany than in France. But the Euro has been on the downslide recently, losing some steem against the dollar so this would work in your favor obviously if the trend continues. Maybe you will miss your family/friends some, but that will vary greatly depending on the person. My biggest problem with Europe is the hours that stores close. I believe an earlier poster mentioned that in Germany many were closed on Sunday. It is the same in France, and can be very annoying/troublesome. But you will learn to adjust.
Biking is big in Europe, so there are usually some good (and flat!) bike trails you can run on.
Sorry I basically answered your "what's it like to live in Germany" question with "this is what it's like to live in France," but I thought I would try to point out some of the great things/opportunites about living over here (Europe) in general, since I saw that a troll has tried to derail the thread. Anyways, if the opportunity is given to you, take it. You will not be disappointed.