I have mentioned that a primary problem with blood alcohol analysis is that no two individuals are alike in their physiology and metabolism of alcohol (see, for example, Convicting the Average Person, Racial Differences in the Metabolism of Alcohol and High Blood Alcohol - or a Zinc Deficiency?. Further, many foreign compounds can influence attempts to measure blood [...]

Read the complete post at http://www.duiblog.com/2009/08/15/how-smoking-can-affect-your-breathalyzer-test-results/