Srimad Bhagavatam Canto 03, Chapter 06, Text 14

SB 3.6.14

nirbhinne asvinau nase
 visnor avisatam padam
ghranenamsena gandhasya
 pratipattir yato bhavet
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
When the Lord’s two nostrils separately manifested themselves, the dual Asvini-kumaras entered them in their proper positions, and because of this the living entities can smell the aromas of everything.
Srimad Bhagavatam Canto 03, Chapter 06, Text 13
Srimad Bhagavatam Canto 03, Chapter 06, Text 15