Which of the following allusions has nothing to do with pharmacists?

It is said that in the Western Han Dynasty, there was a Taoist named Su Dan in Hunan who was extremely filial to his mother and later became an immortal. Before I became immortal, I told my mother that there would be an epidemic next year, and then I could use the spring water in the well to soak orange leaves for treatment. The next year, a large-scale epidemic did occur. His mother followed the instructions and soaked orange leaves with spring water in the well to help her neighbors. There are countless people alive, which became a story for a while. This bottle of "Jing Quan Fragrance" is a classic in Su Dan's Biography of Liexian, which was included in the Biography of Medicine by Fujian Chen Menglei in Qing Dynasty. Up to now, Su Xianguan, Feishengshi, Ludong and the drifting well in No.1 Middle School in the northeast suburb of Chenzhou City, Hunan Province, are all relics commemorating Su Xian. The word "orange and Jing Quan fragrance" is as famous as "Xinglin is warm in spring" and "hanging pot helps the world" in the field of traditional Chinese medicine. In the past, doctors often used the words "Orange Well" or oranges and apricots to name medical books, such as "Orange Well Pearl" and "Tachibana An Chunqiu", which had profound implications. Therefore, there is only the implication of spring blossoms, which has nothing to do with pharmacists.