Why Do Some People Like the Smell of Petrol and Diesel?

Many people find the smell of petrol and diesel surprisingly pleasant, and this attraction can be explained by a mix of science, psychology, and memory. The chemical is benzene, as it occurs in both fuels. Benzene has a sweet, pungent smell, detectable by our olfactory senses at a chemical sense threshold that’ll probably make you think of “danger.”. As an interesting comparison, benzene was once used in perfumes or aftershave, which made it easier for our minds to softly link the stench of benzene’s sweet smell with something positive.

Scientific Explanation

When we inhale trace amounts of benzene and other hydrocarbons, through explanation of chemical reactions, we see a little nervous system suppression and consequently mild but temporary euphoria that mimics the properties of an anesthetic dose. This fleeting dopaminergic response we fit into our enjoyment of smell. However this is health degrading situation made worse by the purposive inhalation from a simple air inhalation of a flood of vapours and chemical compounds.

Psychological Connection

Aside from the nitty and gritty of chemistry, the association is deeply embedded within psychology. Smells directly involve the limbic system, the part of your brain that holds onto memories and assigns emotion. For many, the smell of petrol or diesel is linked with meaningful positive associations that characterize family road trips, camps, or hoisting a bike up to the rafters in a garage. This is usually categorized under the “Proust effect”, when the functional smell recalls a bevy of positive memories and feelings.

A Personal Experience

There is no universal enjoyment of the smell of petrol and diesel, but it is very personal and reflects a combination of biology, brain chemistry, and personal history. Most people perceive the scent, but those who enjoy the scent do so out of the emotional and nostalgic responses it provokes.

Disclaimer: This article is for informational purposes only. Inhaling petrol or diesel fumes is harmful to health. Avoid intentional exposure and handle fuels safely.