Years ago, I was on a connection (to or from Seattle, I think), and this gentleman next to me smelled like he hadn't showered in 3 or 4 days. The flight was crowded, so I had no choice but to endure it. I had a pack of Starbursts in my bag, and every so often I'd slowly unwrap one and eat it, trying as hard as I could to breathe in that more pleasant odor and focus on it as much as I could, even if only for a few passing seconds.
A co-worker of mine (who was elsewhere on that flight) still brings up "Starbursts" and goes into hysterics every time we get into a discussion about B.O.