Air quality in the car: How CO and body odor affect drivers' cognition and driving performance?

Elevated indoor levels of CO and the presence of body odor have been shown to have adverse effects on the cognitive function of building occupants. These factors may also contribute to impaired in-car driving performance, potentially posing a threat to transportation and public safety. To investigate the effects of CO and body odor on driving performance, we enrolled 25 participants in highway driving tasks under three indoor CO levels (800, 1800, and 3500 ppm) and two body odor conditions (presence and absence).