A small amount of oil of pennyroyal sprinkled around the room will drive away the mosquitoes.
"Burroughs' Encyclopaedia of Astounding Facts and Useful Information, 1889" by Barkham Burroughs
Make a salad of pennyroyal, sage, mint, balm, a little lettuce, and sorrel; seasoned with oil, vinegar, and salt.
"The Cook and Housekeeper's Complete and Universal Dictionary; Including a System of Modern Cookery, in all Its Various Branches," by Mary Eaton
We have often used a mixture of equal parts of oil of pennyroyal and kerosene, applied to the hands and face.
"Handbook of Medical Entomology" by William Albert Riley