Catarrh, Successful remedy for

"Dissolve in one-half ounce olive oil as much camphor gum as it will take up. Moisten a
little finger with the oil, rub into the nostrils and snuff well up into the head." The olive oil is very soothing to the diseased parts and the camphor contracts the swollen mucous membranes, thereby relieving the catarrh. This is an excellent remedy.

Source: Mother's Remedies: Over One Thousand Tried and Tested Remidies from Mothers of the United States and Canada, T. J. Ritter