Human beings depend on and hopefully live in harmony with the plant kingdom.
Essential oils carry oxygen for plants as blood does for animals.
Different plants' essential oils resonate at different vibrational frequencies, like the sound of different pitches. Bacteria, viruses and fungi die. They cannot tolerate vibrations above a certain level. Organs such as heart, lung, and kidneys require vibrations at a certain level to be healthy. They are energized when in contact with essential oils at certain vibrations.