Śrīmad-Bhāgavatam · Text 3.29.20
Who is speaking and story frame
यथा वातरथो घ्राणमावृङ्क्ते गन्ध आशयात् ।
एवं योगरतं चेत आत्मानमविकारि यत् ॥ २० ॥
yathā vāta-ratho ghrāṇam
āvṛṅkte gandha āśayāt
evaṁ yoga-rataṁ ceta
ātmānam avikāri yat
As the chariot of air carries an aroma from its source and immediately catches the sense of smell, similarly, one who constantly engages in devotional service, in Kṛṣṇa consciousness, can catch the Supreme Soul, who is equally present everywhere.
Read Śrīla Prabhupāda's purport on Vedabase.io