{"id":5885,"date":"2025-08-12T08:42:26","date_gmt":"2025-08-12T14:42:26","guid":{"rendered":"https:\/\/uuu.smartstartcanada.ca\/blog-post-1-3\/"},"modified":"2026-07-15T00:02:20","modified_gmt":"2026-07-15T06:02:20","slug":"what-causes-false-positives","status":"publish","type":"post","link":"https:\/\/www.smartstartcanada.ca\/fr\/blog\/what-causes-false-positives\/","title":{"rendered":"What Causes \u201cFalse Positives\u201d on Ignition Interlocks?"},"content":{"rendered":"

If you\u2019re new to Ontario\u2019s Ignition Interlock Program or any provincial program across Canada you probably have a few questions. One of the most common concerns is whether everyday items, such as mouthwash, cough syrup, or even vanilla extract, can cause a \u201cfalse positive\u201d on an Ignition Interlock Device (IID).<\/p>\n

It\u2019s an understandable worry, especially if you\u2019re relying on your device to stay compliant and get back on the road. The good news is that with the right knowledge and support from Smart Start Canada you can avoid unnecessary lockouts and drive with confidence.<\/p>\n

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Why Everyday Products Can Trigger a Reading<\/strong><\/h3>\n

Many common items we consume or use contain alcohol, like ethanol or menthol. Vanilla extract, for example, can contain up to 35\u201340% alcohol the same type found in beer, wine, or spirits.<\/p>\n

When you use these products and immediately provide a breath sample, your Ignition Interlock may register alcohol on your breath. While people often call this a \u201cfalse positive,\u201d it isn\u2019t really false. The device is working exactly as it should it\u2019s simply detecting residual alcohol from the product you just consumed.<\/p>\n

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Busting the Myth of False Positives<\/strong><\/h3>\n

Government approved Ignition Interlock Devices in Canada use highly reliable, alcohol specific fuel cell technology. This means they are extremely accurate and do not mistake other substances for alcohol.<\/p>\n

If alcohol is present even from mouthwash or cooking extracts the IID will detect it. The difference is that these traces are temporary. By rinsing with water and waiting a few minutes, the alcohol will usually dissipate, and you\u2019ll be able to provide a clean breath sample.<\/p>\n

Smart Start Canada Tip: Always rinse with water before testing. This simple step helps prevent failed starts caused by residual alcohol from everyday products.<\/p>\n

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Need Help Staying Compliant?<\/strong><\/h3>\n

At Smart Start Canada, we don\u2019t just provide Ignition Interlock Devices we support you through the entire program. If you\u2019re ever unsure about what you can or can\u2019t use, or you have questions about your device, our bilingual customer care team is available 24\/7.<\/p>\n

\ud83d\udcde Call us toll-free at 1-844-432-4776 for immediate assistance, or use our online form to book your installation and get answers fast.<\/p>\n

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Why Choose Smart Start Canada?<\/strong><\/h3>\n

Smart Start Canada is a government approved Ignition Interlock provider with service locations across Ontario and nationwide. Thousands of drivers trust us every year because we make the process simple and stress-free.<\/p>\n

When you choose us, you\u2019ll benefit from:<\/p>\n