Patchouli Knowledge from Touhou 6 is often associated with libraries and books,

Firstly, Patchouli's lifestyle and environment suggest that she may maintain a different scent profile than an old library. Although she is surrounded by books, she is a living, breathing individual who engages in daily activities that influence her scent. Unlike the static nature of books and the dust that often accumulates on them, Patchouli's movements and interactions with her environment would naturally result in a dynamic scent profile. Additionally, the Scarlet Devil Mansion is depicted as a place of opulence and sophistication, implying that its inhabitants likely have access to high-quality amenities, including bathing facilities and perfumed products. Thus, Patchouli would likely maintain personal hygiene practices that prevent her from smelling musty or stale.

Moreover, Patchouli's magical abilities play a significant role in shaping her scent. As a powerful magician, she has control over various elemental forces, including fire, water, earth, and air. This mastery suggests that she can easily purify her surroundings and herself, eliminating any unpleasant odors. Her proficiency in alchemy and potion-making further implies that she could create fragrances or elixirs to maintain a pleasant scent. The presence of magical herbs, potions, and other aromatic substances in her vicinity could contribute to a unique, enchanting aroma rather than the musty scent of an old library.

Furthermore, Patchouli's personal characteristics and habits offer insights into why she does not smell like an old library. Despite her reclusive nature and dedication to her studies, she is depicted as a refined and elegant individual. Her appearance, often portrayed with meticulous attention to detail, suggests that she takes care of her physical presentation. This attention to detail likely extends to her personal scent, as she would want to maintain an aura of sophistication and grace. The choice of clothing materials, such as fine fabrics, and the potential use of scented oils or perfumes would also contribute to a fragrance that contrasts sharply with the odor of aged paper and dust.

In addition, the atmosphere of the Scarlet Devil Mansion itself is likely to influence Patchouli's scent. The mansion is depicted as a grand and luxurious estate, implying that it is well-maintained and regularly cleaned. This upkeep would prevent the buildup of dust and mildew that contribute to the characteristic smell of old libraries. The presence of other inhabitants, such as the meticulous maid Sakuya Izayoi, ensures that the environment is kept in pristine condition. Consequently, the ambient scents within the mansion would be more pleasant and varied, reflecting the mansion's opulence rather than the stagnant air of an old library.

Lastly, it is essential to consider the symbolic representation of Patchouli Knowledge. As a character, she embodies knowledge, wisdom, and the pursuit of understanding. These attributes are often associated with freshness, clarity, and enlightenment rather than decay and staleness. Her scent would likely reflect these positive qualities, symbolizing the invigorating and enlightening nature of knowledge rather than the musty odor of neglected books.

In conclusion, Patchouli Knowledge from Touhou 6 does not smell like an old library due to her dynamic lifestyle, magical abilities, personal hygiene practices, and the refined environment of the Scarlet Devil Mansion. Her character's symbolism and personal attributes further suggest a scent that is fresh, sophisticated, and enchanting, aligning with her role as a powerful and wise magician.