Myth: You can fool a breathalyser test with mouthwash or a mint
By Jonathan van Ekelenburg
Mouthwash and mints cannot actually stop alcohol fumes from reaching a breathalyser test. All they do is make your breath smell fresher, which might be able to fool the nose of a police officer smelling for alcohol on your breath, but will do nothing to fool a machine.
In fact, mouthwash can make things worse with a breathalyser, as many mouthwashes contain alcohol!