What it is: This refill pack for your Pura Smart Diffuser fills your home with a beautiful and refreshing scent. Volcano: Volcano is the perfect blend of citrus and sugar notes. Like the excitement and energy of a summer-night rendezvous, this fragrance is simply unforgettable. Aloha Orchid: This unmistakably floral fragrance greets you with a smile, fills your home and lifts your spirit. This bouquet of flowers brings orchid, gardenia and jasmine