For the last 5 days my girlfriend has had nasal problems and still blowing dirt out of her nose. I told her she was making a big deal out of nothing, but honestly my nasal cavaties have not felt all that great since then either. With more dirt flying at Eldora more and more. I do wonder how toxic the dirt actually is, considering its probably a mix of tire, dirt, fuel, oil and whatever chemicals used in giving the track a surface.