Mouth ulcers: Persistent mouth ulcers or sores can sometimes signal a viral or bacterial infection, especially during the early days of nicotine withdrawal
It is possible to carry tobacco without exceeding certain limits
Here is a list of foods that may impact your reading: Cakes or baked goods with alcohol as a core ingredient, like rum cake Baked goods with a high amount of vanilla extract Pasta with vodka sauce Bread, pizza, and pastries that contain yeast Glazed baked goods (think donuts, cinnamon buns, or honey buns) Red wine vinegar Soy sauce Sugarless gums Hot sauce Protein bars Ripe fruit Fermented foods Macadamia nuts Drinks Its clear that alcoholic drinks should be avoided before driving and will trigger a BrAC reading, but there are other drinks that can contain trace amounts of alcohol or other ingredients that may trigger a BrAC reading, including: Energy drinks Protein shakes/drinks Fermented sodas (like kombucha or kefir) Non-alcoholic beer or wine Medications Both prescription and over the counter (OTC) medications have been found to trigger BrAC readings, especially if they are ingested or inhaled through the mouth

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These items can be insured at stated value, usually on your home owners policy, for little added premium
Smoking and Tobacco Control Monograph No