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.