The microscopic particles of excrement one smells after someone, or some thing, flatulates.
When I cleaned out my nose with a cotton swab, there was a mass of farticles on it and it smelled like ass.
Copyright (c)2007 SEAN GRAY <me(AT)seangray.com>.
Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.2
or any later version published by the Free Software Foundation;
with no Invariant Sections, no Front-Cover Texts, and no Back-Cover
Texts. A copy of the license is included in the section entitled "GNU
Free Documentation License".