Core Points - Certain foods and beverages can lead to false positives in breath alcohol tests, potentially misclassifying individuals as driving under the influence [1][2] - Common high-risk foods include egg yolk pies, Swiss rolls, fermented foods, and high-sugar fruits like lychee, which can produce ethanol during fermentation [1] - Medications and products containing ethanol, such as certain cough syrups and mouthwashes, can also result in elevated breath alcohol levels, with some exceeding legal limits [2] Group 1 - Foods like egg yolk pies and Swiss rolls often contain added alcohol as a preservative, which can lead to detectable alcohol levels in breath tests [1] - Fermented foods such as fermented tofu and yeast bread can produce trace amounts of ethanol during their preparation [1] - High-sugar fruits, when fermented in anaerobic conditions, can also generate ethanol, leading to increased breath alcohol readings shortly after consumption [1] Group 2 - Products like Huoxiang Zhengqi water and certain mouthwashes can yield breath alcohol levels significantly above legal limits, with some readings reaching 600 mg/100 ml [2] - Drivers who test positive due to food or medication consumption are advised to explain their situation to law enforcement and provide evidence of their recent dietary intake [2] - Blood tests can be used to confirm actual blood alcohol content if breath tests remain inconclusive [2]