What is the term for substances that can affect the accuracy of a breath test?

The term "Breath Contaminants" refers specifically to substances that can impact the accuracy of breath tests used to measure blood alcohol concentration (BAC). These contaminants can include various substances that are either consumed or present in the environment, which can produce false readings on a breath alcohol device. For instance, substances such as certain mouthwash, breath fresheners, or even some medications can lead to elevated readings, thereby affecting the reliability of the test results. This concept is critical in understanding the factors that may influence the outcomes of sobriety testing and ensuring that law enforcement officers interpret breath test results with caution, considering potential inaccuracies caused by external factors.