Oh, most def. Just like stones. All things alive resonate energy.
Science denies most supernatural stuff, but like the scientists, I gotta draw a line between dead, rocks and living things like chimpanzees and bacteria (why am I suddenly reminded of George Bush Jr???).
Why would an essential oil, born of a living thing not retain this energy?
Because it died.
If you believe that living things are born, then it also makes sense to believe in death (at least physical death anyway).
Looking at your logic, if stones are alive, then there's no such thing as death.
Again, I'm not being harshy critical, only logical. Emotions are nice too, but can be wrong (as can logic due to human error)