If you have a glass of wine with dinner will it show on breathalyzer?

It depends on the amount of wine you drink. If you have only one glass, it is likely that it will not show up on a breathalyzer. However, if you have several glasses of wine, it is possible that it will be detectable. The amount of alcohol that can be detected on a breathalyzer varies from person to person, depending on factors such as weight, age, gender, and metabolism.