No, topical rubs containing camphor, menthol, or eucalyptus are not safe for a two-month-old baby, as they can irritate small airways and cause breathing difficulties. To safely relieve your baby's congestion, you can use saline nasal drops to loosen mucus, gently clearing it with a rubber bulb syringe. Running a cool-mist humidifier in their room also helps keep the air moist and eases breathing. Ensure your baby stays well-hydrated with regular breastmilk or formula feedings. Avoid all over-the-counter cough and cold medications. If your baby struggles to breathe, develops a fever, or is feeding poorly, please contact your pediatrician right away.