It’s time to spring-clean your home’s scent. Even if you don’t consciously notice it, the way your home smells affects how you feel about it. And while throwing open the windows can help freshen the air in some locales, if you’re a city dweller, you may just be letting in some lovely smog. Instead, try these subtle, completely-natural ways to clear the air. Adjust these methods to build an aroma that’s as delicate or robust as you want, and you’ll breathe a little easier at home.