Answers.com® is making the world better one answer at a time. Smells usually travel through the wind. If you're outside playing volleyball, you'll probably get the scent of mom's fresh baked blueberry pie sitting on the windosill waiting to be cooled and then eaten. Making you hungry? Well all smells can't travel without a boost, that's why you have a nose that picks up the scent of perfume a mile away.