I have noticed on numerous occassions white smoke and a strange odor coming from the dashboard. It seems to pour out from the center of the dash where the radio and a/c vents are located. I have had to stop and shut the vehicle down because I am not sure what the problem is. I check my coolant, oil, brake fluid etc. weekly. We just did a flush and put in new coolant, changed the air filter, oil filter and oil. It gets a atune up every 6 months. So what could be causing this? Help please. The vehucle has 94k