Will 3 olives from a martini show up on a breathalyzer?

No, three olives from a martini are unlikely to have a significant impact on a breathalyzer test. The alcohol content of the drink, rather than the garnishes, is what matters for blood alcohol concentration (BAC) levels. Since olives contain negligible alcohol, they won't contribute to the readings. However, if the olives are consumed along with the martini, the overall alcohol from the drink itself will still be present in the breathalyzer results.