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.
3. Eucalyptus Oil â there are a few different types. In the absence of R.C. oil, grab any kind of eucalyptus that you have and diffuse for congestion relief. 4. Thieves Oil â I donât even know where to start with Thieves oil because it helps with just about everything.
(See link to Essential Oils Profiles at bottom of this article.). Essential oils for fighting respiratory infections: benzoin, clove, eucalyptus, lavender, marjoram, tea tree, thyme. Essential oils to ease mucus congestion: benzoin, birch, cedarwood, clove, cypress, eucalyptus, ginger, peppermint, tea tree, thyme.