I love the way these Old Fashioned Molasses Cookies smell while baking. They always get me in the Christmas spirit!
[My 2 Cents]
Be careful not to over bake these. I know they are supposed to be a crunchy cookie, but you don't want them too crunch and you certainly don't want them burnt. That would make for a not-so-good smelly kitchen. I found that I was able to pull mine out around 10-11 minutes rather than waiting the full 12 minutes. Depending on how your oven cooks will determine how long you will need to leave yours in for.
Adapted from The Cookie Bible