Yes it is very important to know what "genus" of the family you are using. In the typical fashion of less reputable companies, they will "miss label" the oil which can do one of two things....cause harm or not work as intended. A good example is lavender. Lavandula angustifolia (lavender) has been used for minor burn for centuries. But if a supplier users Lavandin (a lavender hybrid) and labels it a lavender, it will make the burn worse. The hybrid has a high content of camphor while the other has none. That is why you need to know the botanical genus of the oil you are using.

On the smell of geranium....I'm not familiar with how the plant smells but the oil is pretty strong. It's a heavier structure. It smells like rose and it took me while to get used to it. I like it better after it's been exposed to the air longer. My sister is not a fan of it unless it's mixed with other EOs to balance it out.

I should start testing various oils on John's feet and see if a pattern emerges. I've got one coming today that has pain relieving, cell regenerating and anti-inflammatory qualities. I do have to say that the skin on his feet is much improved over the past year since I've been working on them.