The name is fragrance design and a growing trend in hotel marketing: Hotels use fragrances to enhance the holiday mood and to give their guests a lasting impression. High-end hotels use fragrance diffusers as a strong subliminal brand and marketing, adding a distinctive scent to candles, soap and even stationery so that guests can take it home and remember it forever. How hotel guests actually respond to fragrance brands is as important as the fragrance they are used for.