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