Cigarette Smoke (IMAGE) University of Toronto Caption Toronto scientists have pinpointed the brain cells behind nicotine aversion raising hopes they could be harnessed for better treatments to help smokers quit. Credit Hanjörg Scherzer on Pixabay Usage Restrictions credit author License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.