The cartridge can include one or more valves that are biased in a closed position to prevent {TAIL ~ odors} from escaping {HEAD ~ the cartridge} 
The cartridge can include one or more valves that are biased in a closed position to prevent { TAIL ~ odors } from escaping { HEAD ~ the cartridge }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD