What is this plant? smells like vicks vapor..?

Question

it grew in my backyard.. is this poisonous hemlock?

Answer 1

Could it be Eucalyptus?  

Answer 2

The darker green plant in the background is called eucalyptus globulus I've enclosed a picture of it the fern in the front could be a rabbit's foot Fern or a Boston fern but the reason it smells like Vicks vapor rub is because there's eucalyptus oil and Vicks vapor rub