There are plenty of rumors and myths surrounding ignition interlock devices when it comes to the accuracy of a Blood Alcohol Concentration (BAC) reading. While there are concerns about cough syrup or food cooked with wine or beer affecting a BAC reading, these issues are easily fixed with a few smart practices. There are actually no foods or beverages, excluding alcoholic beverages, that will disable a vehicle, if the person waits a few minutes before blowing into the device after consuming some of the “trigger” foods. Drinking water after eating, and before attempting to start a vehicle equipped with an ignition interlock device, will also eliminate a false reading.
In truth, the only thing that will disable a vehicle that has an ignition interlock device installed is a driver that has been drinking alcohol.