Ever work out after a night of heavy drinking and find that the smell coming off you allows you to reconstruct moments of the previous evening that you may have forgotten? (Oh! Sniff Sniff Sweat-- I forgot about that chicken calzone!)
One time my boyfriend drank too much and threw up on a homeless person. The homeless person was totally disgusted. That's right. My boyfriend grossed out a homeless guy. It's one of the many of my partner's skills that I wasn't aware of during our early courtship. Also, he's stupidly good at the card game Spite and Malice. It's annoying.