It is widely used to clear nasal passages and loosen mucus in the lungs. Inhaling eucalyptus steam is a common remedy for coughs, colds, and sinusitis.
Studies suggest it can fight bacteria, fungi, and even certain viruses. It has shown potential in defending against MRSA and suppressing oral herpes (HSV-1) . eucalyptus oil
The oil has anti-inflammatory and analgesic properties. It is often applied topically (properly diluted) to ease muscle aches, joint pain, and symptoms of arthritis. It is widely used to clear nasal passages
Its antibacterial effects help fight mouth odor and plaque, which is why it's a frequent ingredient in toothpastes and mouthwashes. 12 Ways to Use Eucalyptus Oil - WebMD eucalyptus oil