Shloka 29
Brahmopadeśa: Adhipatitva-kathana, Dharma-lakṣaṇa, and Kṣetra–Kṣetrajña Viveka
Book 14, Chapter 43
पार्थिवो यस्तु गन्धो वै घप्राणेन हि स गृहाते । प्राणस्थश्न तथा वायुर्गन्धज्ञाने विधीयते,पृथ्वीका जो गन्ध नामक गुण है, उसका नासिकाके द्वारा ग्रहण होता है और नासिकामें स्थित वायु उस गन्धका अनुभव करानेमें सहायक होती है
pārthivo yastu gandho vai ghrāṇena hi sa gṛhyate | prāṇasthaś ca tathā vāyur gandhajñāne vidhīyate ||
ヴァーユ神は言った。「地の元素に属する性質たる香りは、まさしく鼻によって捉えられる。さらに、嗅覚の器官に宿る生命の風（プラーナ・ヴァーユ）が、その香りを知覚させるために定められている。」
वायुदेव उवाच
Educational Q&A
Each element has a defining quality (here, earth has smell), each sense has its proper object (the nose grasps smell), and prāṇa/vāyu functions as the subtle enabler that makes sensory cognition operative.
Vāyu-deva is explaining a doctrinal point about how perception works: the earth’s quality called fragrance is perceived through the nose, and the vital air located there assists and regulates that act of knowing.