Fern leaves always come out of the ground with that little curl and they don't branch. I'm thinking its not a fern.
Because of the Eucalyptus smell, I'm sticking with some sort of Tansy. If it bloomed, that would solve the dilema. The thing with identification is that there is some variability within a genus. So other characteristics have to be the determining factor. The leaf shape is close but no cigar. Flowers! We need flowers...
I'm not sure where the rest of my co-conspirators are but they could come out of hiding any time now. Hint! Hint!