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