"A steam inhalation with Eucalyptus is an effective natural treatment for colds, because it not only eases nasal congestion, but inhibits proliferation of the cold virus. Eucalyptus used in AIRSPRAYS or any form of vaporisation during epidemics, will give a good measure of protection from ...
the infectious illnesses of childhood."
Davis, P. Aromatherapy an A-Z, (2000). p. 114