Need help to stop "smelling"?

I had to clean an area this morning with some extremely undesirable smells associated; now, several hours later, I can still "smell" the odor, even though I'm several miles away now from where I was working, have changed clothes, showered (multiple times) and washed my hands several times. Any suggestions on how to make the "smell" go away? (No one else smells it, so it's like i'm remembering it or something)