While there is no scientific evidence to support VapoRub’s effectiveness, the logic behind the hack is that bed bugs despise strong odors, especially those containing mint.
The potent mixture of camphor, menthol, and eucalyptus in VapoRub gives it a powerful smell, which might be able to stop bed bugs in their tracks for a few hours.
However, the hack has drawbacks, such as not entirely stopping the infestation. It can also make your bed greasy and pose a threat to your health from inhaling too much VapoRub.