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.
Type of Essential Oil Diffuser. Basically, an essential oil diffuser is a tool that can break essential oils into small negative ions using heat or strong blows and then push them into the air around it. These ions quickly spread and fill in the whole space.