A clean pure fresh smell.  Eucalyptus oil should be used with care and people with high blood pressure and epilepsy should avoid it. 

A well known decongestant it can be used in burners and vapourisers to help clear a blocked nose and ease symptoms of cough and colds.

Dilute to maximum of 5% in base oil prior to skin application, avoid during pregnancy and breast feeding. Many essential oils can cause sensitivity, if you have sensitive skin consult a qualified professional prior to use.