Every inch of my friend’s apartment smells like the W Hotel in Miami – so when I discovered she had Aura House’s cold air diffuser to thank for that, I snagged one immediately. It’s gorgeous, uses clean oils, and boasts five signature scents that are inspired by luxury hotels around the world. Needless to say, this diffuser is a dream come true and earns a full five stars from me. Here’s why I’m hooked…