Long time ago, I met a guy who had the worst breath ever, absolutely rotten... Makes me gag to this day, just thinking about it.
I was mortified, but being still very new and totally embarrassed by the whole situation, I didn't mention it. Luckily, he only stayed for 30min, but every single time he opened his mouth to say something to me, I had to turn my head away. Obviously no kissing, or reverse oral. He did try to suck on my breasts, and I had to scrub them in the shower right after he left, they stank! In fact, the whole room was filled with the revolting odour to the point that when my friend walked in a few minutes later, she said "oh my god, what is that smell!!" Can't believe I managed to stop myself from throwing up