I never expressed that before (maybe because I chose to avoid that person instead), but for garlic breath, I had a few times saying, "wow, you must have eaten a nice meal earlier, wish I know where you had your dinner, where do you have it? "..."I love garlic myself too, I will try that restaurant/ dish sometimes, but you know, I don't want to torture my partner with my garlic breath. May be you want to try my trick of <xyz> next time you have a lot of garlic before dancing tango..."

from Tango-L (http://pythia.uoregon.edu/~llynch/Tango-L/2004/msg00364.html)

also see breath mints

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