Getxent Technology allows for any odor to be captured during a “soak” period (7days) and then the odor releases slowly over 6 months. 
To insure longevity the tubes should be stored in mylar bags after infusion. 
Technology: Polymer Odor Capture and Release (Patent WO2018206808)
 
Tube dimensions: 8×35 mm / 0.3×1.4 in.
 
Tube weight: 0.93 g / 0.002 lbs