No sinus infections in the house for years. When we get stuffed up we get relief in under a minute, and it doesn't settle or move into the chest. Inhale it from the bottle, or put a few drops on a tissue or cotton swab to carry around/ sleep with. When it is all of us I put 20 drops or so with a cup or 2 of water and simmer on the stove for a few hours. That also prevents colds from spreading(anitbacterial and antiviral). One person I know puts it in her vacuum when she vacuums.
A teaspoon of honey (local - raw is best) and a 1/4 teaspoon of cinnamon will usually knock out a cold within a day or two. Take twice a day for 3 days for best results. Both honey and cinnamon are antiviral, antibacterial, and antifungal. Also knocks bladder/kidney infections, reduces sugar levels, blood pressure, acts as a pain reliever for arthritis.