Use any of the following, alone or in combination (let your nose be your guide) in a hot foot bath for head congestion and fever:
Sage
Rosemary
Thyme
Pine essential oil
Eucalyptus essential oil
1 Tbsp mustard powder
Dancing is just discovery, discovery, discovery. ~Martha Graham
Foot or hand bath: Add 4-5 drops of an essential oil to a container filled with warm water and stir the water to mix the oils. Soak feet or hands and relax.