The apparatus further includes {HEAD ~ a source} of {TAIL ~ octenol} provided in the housing, and a device for introducing and mixing the octenol with the carbon dioxide within the housing 
The apparatus further includes { HEAD ~ a source } of { TAIL ~ octenol } provided in the housing , and a device for introducing and mixing the octenol with the carbon dioxide within the housing
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH