Smoke from vehicles affects brain

A research report states that the brain of human will get affected if they inhale the smoke from the vehicle.As everyone knows the smoke from vehicles will affect the lungs but this research proves that the effect of smoke is far more worse than our expectations.
To prove their report, they selected some 10 healthy people and made them to stay in a closed room which is full of smoke.They obseved the working of their brain through e.e.g..To everyone 's surprise the brain started working strangely for all the 10 people.Even after coming out of the room their brain not worked properly for nearly one hour.At the same time another test is conducted with 10 different people in a room with full of fresh air.Their brain worked properly infact their working was much better than the normal time.The scientist confirmed that these effects will happen to normal people inhaling hazardous smoke daily.