Sandalwood

Candanam – Sandalwood

As a sandalwood tree is decorated with fragrant flowers and branches, the Lord’s body was decorated with valuable jewels and pearls. He was the self-situated tree, the Lord of all others in the universe. And as a sandalwood tree is covered with many snakes, so the Lord’s body was also covered by the hoods of Ananta.
(SB 3.8.29)

It is said that around the sandalwood tree, which is a very valuable tree, there is a venomous serpent. Sandalwood is very cold, and venomous serpents, because of their poisonous teeth, are always very warm, and they take shelter of the sandalwood trees to become cooler.
(SB 4.22.11 purport)

This rascal Prahlāda has appeared like a thorn tree in a forest of sandalwood. To cut down sandalwood trees, an axe is needed, and the wood of the thorn tree is very suitable for the handle of such an axe. Lord Viṣṇu is the axe for cutting down the sandalwood forest of the family of demons, and this Prahlāda is the handle for that axe.
PURPORT
Thorn trees generally grow in deserted places, not in sandalwood forests, but the seminal brāhmaṇas Ṣaṇḍa and Amarka compared the dynasty of the Daitya Hiraṇyakaśipu to a sandalwood forest and compared Prahlāda Mahārāja to a hard, strong thorn tree that could provide the handle of an axe. They compared Lord Viṣṇu to the axe itself. An axe alone cannot cut a thorn tree; it needs a handle, which may be made of the wood of a thorn tree. Thus the thorn tree of demoniac civilization can be cut to pieces by the axe of viṣṇu-bhakti, devotional service to Lord Kṛṣṇa. Some of the members of the demoniac civilization, like Prahlāda Mahārāja, may become the handle for the axe, to assist Lord Viṣṇu, and thus the entire forest of demoniac civilization can be cut to pieces.
(SB 7.5.17)

Śrī Advaita Ācārya then smeared the bodies of the Lords with sandalwood pulp and then placed very fragrant flower garlands on Their chests.
(CC Madhya 3.104)