Are there any substances that can interfere with breathalyzer readings?

Yes, there are substances that can interfere with breathalyzer readings. One common substance is mouthwash or breath fresheners containing alcohol. These products can give a false positive reading as they contain small amounts of alcohol. Additionally, certain medical conditions like diabetes or certain diets like low-carb diets can also affect breathalyzer results. These conditions can produce substances called ketones, which may be mistakenly identified as alcohol by the breathalyzer. Furthermore, paint, varnish, or other chemicals with volatile compounds can potentially lead to inaccurate readings. It is important to note that if someone has consumed alcohol shortly before testing, it will also influence the breathalyzer results. To ensure accurate readings, it is recommended to wait at least 15 minutes before taking a breathalyzer test after eating or drinking.