[GilesB]

That is exactly what airborne means.

airborne,
adj carried through the air. In health care settings, viruses or bacteria may become airborne, e.g., when someone sneezes or coughs - Mosby’s Dental Dictionary, 2nd edition. © 2008 Elsevier, Inc. All rights reserved.

airborne /air·borne/ (ar´born) suspended in, transported by, or spread by air - Dorland’s Medical Dictionary for Health Consumers. © 2007 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

[Kartographer]

M-O-O-N, spells Obola


Bring out your dead! The Dark Man cometh! Bring out your dead! The Dark Man cometh! Bring out your......

[jetson]

So if you can smell someone smoking a cigarette from fifty feet away, that means an airborne particle could travel just as far.