So to come to the bhakti-mārga, or devotional service, it is not very difficult. The smell is creation of God, or Kṛṣṇa, puṇyo gandhaḥ pṛthivyāṁ ca. Therefore the smell should be used for Kṛṣṇa's pleasure. This is bhakti, not for my pleasure. This is called tyāga. Tyāga means that actually it should be used for Kṛṣṇa, who has produced it. Hṛṣīkeṇa hṛṣīkeśa-sevanaṁ bhaktir ucyate (CC Madhya 19.170). Our senses are also Kṛṣṇa's senses. He is Hṛṣīkeśa. Hṛṣīka-īśa, iti hṛṣīkeśa. Hṛṣīka means senses. Unfortunately, our senses are being used for sense satisfaction, neither for our use. It is for sense gratification. So bhakti means this practice of using the senses for sense gratification should be rectified, should be purified. Then the same senses will be utilized for Kṛṣṇa's satisfaction, and then you become a bhakta. Kṛṣṇa's things may be used for Kṛṣṇa. Sarvopādhi-vinirmuktaṁ tat-paratvena nirmalam (CC Madhya 19.170).
The Caitanya-caritāmṛta kaṛacā, the author of Caitanya-caritāmṛta, he has distinguished between kāma and prema. Kāma means lusty desires or sex desires. Generally, it is meant, sex desires. So he has very simplified the matter very much. Ātmendriya-prīti-vāñchā—dhare... nāma dhare... prema... tāre... bali dhare...nāma kāma (CC Adi 4.165), like that. Kṛṣṇendriya-prīti-vāñchā dhare nāma prema, and ātmendriya-prīti-vāñchā—dhare nāma kāma. They... Actually, senses are there for satisfaction. That's a fact. Otherwise, why the senses are there? Just like the smell is there, and the nose is there. So smell is there for satisfaction of the senses. For the smell, for the nose, nostril, the beautiful flower is there, or beautiful, anything beautiful... To the man, woman is beautiful; to the woman, man is beautiful. So the eyes are there, and the beautiful things are there. That is arrangement. That is development of this nature. As soon as... It is... It is coming from the fire. The... That we have already described. The fire is the origin of beauty and the fire is the origin of eyesight. The loss of eyesight means there is less fiery element. Loss of appetite means there is less of fiery elements. In the Ayurvedic treatment it is called agni-māndyam. So these are transformation of the fire. Similarly, the smell is transformation of the rasa, taste.