Fragrance of the Earth.

Krishna says in Bhagavad-Gita:

"I am the original fragrance of the earth, and I am the heat in fire. I am the life of all that lives, and I am the penances of all ascetics."

Purport: Everything in the material
world has a certain flavour or fragrance, as the flavour and fragrance in a flower, or in the earth, in water, in fire, in air, etc. The uncontaminated flavour, the original flavour, which permeates everything, is Krishna.

From Bhagavad-Gita As It Is; His Divine Grace A.C. Bhaktivedanta Swami Prabhupada.