She said: "I took a Subway sandwich onto a plane and I was in first class. The other passengers were not happy with the smell! I looked around and could see a lot of disgusted faces.
I put everything on it, and the onions made it really honky!" Although none of her fellow passengers scolded the singer, Kelly already had her excuse readied in case someone did shout at her. She added: "If I think I'm going to get into trouble I always say that I'm sick. Then they feel like they can't really be cross with you. They think you are too feeble for them to be angry with you." (Source)