Scientific laws are considered established and universally applicable (to certain class of things or phenomenon under appropriate conditions) but not necessarily definitive. Also called laws of science.
Afflictions of the respiratory system include irritation and infection of the ears, nose and throat. Respiratory problems also may involve congestion, which can be decreased by inhaling rosemary (especially the verbenone type), hyssop (use var. decumbens only), tea tree, eucalyptus, lavender or peppermint.
Ultrasonic Diffuser. Purifies the Air and More! An ultrasonic diffuser is a type of essential oil diffuser that disperses essential oils into the air. There are several different types of diffusers but they are all fairly easy to use. And if you are an essential oil lover, then you definitely want to own one!