Can't tell your EDPs from your EDTs? Not quite sure what a “vetiver” is? Here's how to navigate the booming men's fragrance market—and walk away with a scent that feels uniquely your own.

Elon Musk arrived in the nation's capital with the chain saw-wielding swagger of a tech titan who never met a problem he couldn't solve with lots of money, long hours or a well-calibrated algorithm.