I noted my beloved was having a bit of ketosis-breath after a day of travel and not enough liquid, then we had a dinner out that was garlic-laden, so I was wondering about breath and how to make sure one's breath is okay since the old breathe-into-the-hand trick is not any good. A quick Google and I found a great little test that worked for me: lick the back of your hand or arm, let dry, then sniff. Sure enough, the garlic was evident. I'm finicky about dental hygiene, but between ketosis, garlic, and who knows what else, who doesn't want to have an extra measure of confidence--eh?

Here's the webpage I was reading: The Bad Breath Test