The Hidden Dangers of Traffic Pollution on Our Sense of Smell

A study conducted by the University of Eastern Finland reveals that exposure to ultrafine particles from traffic emissions can significantly alter gene expression in human olfactory mucosa cells. The study found that both renewable and fossil diesel emissions disrupt various cellular functions, but renewable diesel, especially when combined with cleaner engine technology, causes fewer adverse effects. These findings highlight the potential pathway for environmental pollutants to impact the brain through the olfactory system, emphasizing the need for monitoring and regulating these emissions.