This sensation can influence how a person perceives discomfort. A cooling or warming sensation may temporarily distract attention from a minor ache, making the area feel different or more comfortable.
However, a change in sensation should not be confused with treatment of the underlying condition. Menthol does not automatically eliminate inflammation, remove an obstruction, or destroy the microorganisms responsible for an infection simply because it produces a noticeable effect.
The distinction is especially important when considering ear pain. A person may believe that a strong fragrance or cooling sensation indicates that a remedy is working, even when the source of the discomfort remains unchanged.
Menthol is also capable of irritating sensitive skin or mucous membranes in some circumstances. Applying a mentholated ointment too close to the eyes or other delicate tissues can cause significant discomfort.
For these reasons, the sensation produced by a product is not a reliable way to determine whether it is medically appropriate for a particular problem.
3. What Camphor Contributes to the Formula
Camphor is another active ingredient found in many formulations of Vicks VapoRub. It is used in certain topical products because it produces characteristic sensations on the skin and can serve as a topical analgesic ingredient.
Despite its long history in household products, camphor is not harmless in every circumstance. Exposure depends on the amount involved, the route of exposure, and the person's age and health circumstances.
Swallowing camphor-containing products can cause poisoning, and young children are particularly vulnerable to accidental exposure. The ointment must therefore be stored securely and used only in accordance with its labeling.
Camphor's presence also does not make Vicks an appropriate treatment for an ear infection. The ingredient's role in a topical ointment does not establish that it is safe or effective when introduced into the ear canal.
The same principle applies to many other familiar medicines. Ingredients that are useful in one carefully defined formulation cannot automatically be transferred to a different route of administration.
Anyone considering an unusual use of a medicated product should consult a pharmacist or healthcare professional rather than relying solely on the fact that one or more ingredients have been used in traditional remedies.
Source: Poison Control — Is Vicks VapoRub safe?.
4. Why Some People Associate VapoRub With Ear Relief
The association between Vicks VapoRub and ear discomfort is part of a broader tradition of household remedies. When someone experiences an ache, pressure, or a feeling of congestion, they may look for an accessible treatment that seems capable of providing immediate comfort.
A strong menthol fragrance can make a product feel active, and its cooling sensation may create the impression that it is addressing discomfort. People may also associate ear symptoms with a cold because the nose, throat, and middle ears are connected through the eustachian tubes.
These tubes help equalize pressure in the middle ear. During a respiratory infection or an episode of allergies, inflammation can interfere with their normal function, producing pressure, fullness, or muffled hearing.
Because VapoRub is associated with cold symptoms, it is understandable that some people might assume it can address every symptom that occurs during a cold, including ear discomfort.
Nevertheless, the relationship between respiratory symptoms and ear problems does not mean that a chest rub can treat an ear condition. The ointment does not directly correct eustachian tube dysfunction, remove trapped fluid, or treat an infection inside the ear.