Why do I like the smell of new plastic?

…or new houses, new cars, dry erase markers, gasoline, and inflatable pool toys?

The “smelly chemicals” are typically benzene, and other, similar, hydrocarbons. They’re carcinogenic! So why would we like the smell of them?

There are actually two established theories about this.

Theory 1

Smelling benzene releases dopamine, the reward chemical in our brains. It temporarily suppresses our nervous system, not unlike alcohol, causing us momentary euphoria.

Theory 2

Smell is the only sense that goes directly to the emotional center in our brains. If we have good childhood memories of fresh plastic, often found in new toys, for example, it may activate the same response.

So, if you love the smell of new plastic at home, you’re not alone! Though, it’s still best to prevent exposure to carcinogens by ventilating and using an air purifier that can capture benzene and other hydrocarbon VOCs during their off-gassing period.