Forget that keychain breathalyzer, what you want is this Halitosis Detector

Actually, you might want both. One to see how thick your beer goggles are and/or whether you should take a taxi, and then if that test goes okay, time to check your breath will be a deal-breaker.

What you really need is a gadget that’s a breathalyzer on one side, a halitosis detector on the other, and then a pez/altoid dispenser on the bottom. Man, I’m a freaking genius.

Halitosis Detector Tells You If You Have Bad Breath [Geeksugar]