Socks from Canada and New Zealand were placed in jars on opposite walls

We isolated the worn socks safely away from contamination in glass jars.

http://scienceblogs.com/neurophilosophy/2008/06/stasi_smell_jars.php

FLAP

1.  FLAP

Raewyn wore socks and had the smell extracted by and analysed by Robert Winz at Plant and Food Research laboratory, using HS-SPME-GC-MS, which means 'headspace (HS)/solid phase microextraction (SPME)/gas chromatography-mass spectrometry (GC-MS)' , a method which was developed to determine the profiles of volatile substances.

Both ReSense and FLAP grow out of a notion that, like the bandwidths of light and sound that are beyond unaided human perception, olfactory signals presented to our senses remain mainly beyond comprehension.