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.
These oils are oregano, lemon, peppermint, a respiratory blend and Thieves. A respiratory blend is a mix of myrtle, spruce, peppermint, pine, lavender and marjoram oils and three varieties of eucalyptus oil. Thieves is a blend of clove, cinnamon bark, rosemary, lemon and eucalyptus radiata oils.