1. Regarding smell, you can sweat quite a bit and still not smell if you're clean. The smell comes from bacteria that lives on your skin, so if you shower before biking you probably won't smell when you get there even if you sweat quite a bit. Some of the same advice might apply to your clothes - don't wear something stinky, haha.

2. As other people said, you can keep a dry set of clothes at work.

3. When you get near your destination, like a couple of miles, stop pushing and take it real easy. Problem is that the air you're going through does a lot to cool you off, but it takes your body several minutes from the time you stop biking to stop producing heat from exercising. If you coast more at the very end of your ride, your body doesn't sweat like crazy when you get off the bike, and you get cooled down by the wind on that last stretch.

4. People say that they use washclothes for the 'pits, and just dry off their face. For me, I'm fortunate enough that I don't really have to do any of that.