“I had to make a quick trip to the drug store one night last week. Climbing back into my car after my shopping was done, I happened to glance at the car parked next to me, and noticed that the driver was breathing into a breathalyzer ignition lock.

Naturally, the first thing that came to mind was, “You know, I really don’t know how a breathalyzer works.” Which led to, “How does alcohol get on your breath in the first place?” Which of course became, “Hey, I could blog about this!”” http://gotsomescienceonyou.com/2013/11/05/the-booze-on-your-breath-or-how-a-breathalyzer-works/