There is no evidence suggesting that products like VapoRub can prevent COVID-19 infection. The ingredients in VapoRub – camphor, eucalyptus oil, and menthol – do have antibacterial properties, and can sometimes soothe symptoms from respiratory ailments when applied to the chest or throat or used in a vaporizer. However, VapoRub should not be used in or near the nostrils because inhalation of its petroleum base can cause dangerous vapors to collect in the lungs, resulting in a pneumonia-type illness and lung damage. Camphor can also be toxic if absorbed through the lining inside the nose or accidentally swallowed |