The iconic "new car smell" that many people find appealing is actually a complex mixture of chemicals emitted from various parts of a car's interior. These chemicals, numbering over fifty different types, originate from materials like plastics, adhesives, upholstery, and even the paint used inside the vehicle. Among these are volatile organic compounds (VOCs) as well as more concerning substances like brominated flame retardants (BFRs), chromium, and lead.
Brominated flame retardants, commonly used to reduce the risk of fires in car interiors, can pose serious health risks. They have been linked to hormonal issues, thyroid disruption, and other health problems. Chromium, used in leather processing and other manufacturing processes in the automotive industry, can also be toxic if it penetrates the body, potentially causing serious allergic reactions and even lung cancer in its more dangerous forms. Furthermore, lead, though less commonly used today, may still be present in older vehicles or in some components imported from regions with less stringent regulations, and it’s well-known for its potential to cause neurological damage.
The smell is most intense when a car is new, as these chemicals are off-gassing or evaporating into the air. Over time, the intensity of these emissions decreases as the compounds break down and disperse, which is why the new car smell is typically a temporary sensation. However, the initial exposure can be significant, especially in vehicles that spend a lot of time parked in hot environments, where heat can accelerate the release of these compounds.
While manufacturers have been working to reduce the presence of harmful chemicals in vehicle interiors, and some have even started promoting their products as having low-VOC interiors, it's still advisable for new car owners to keep their vehicles well-ventilated, especially during the first few months of ownership. Regular airing out and avoiding parking in direct sunlight for prolonged periods can help in mitigating the concentration of these chemicals in the car's cabin. Studies continue to advocate for stricter standards and increased transparency from manufacturers regarding the chemicals used in their vehicles to ensure consumer safety and minimize potential health risks associated with the much-enjoyed new car smell.
