Even if it worked for a while, it appears to be too small to last for the many hours (days) you might be at risk for high altitude problems (hopefully you meant AMS, not HAPE or HACE). Otherwise, the product appears to be a "boutique drug", sort of like those O2 stations you hear about in Japan.
Does a quick snort or two actually help altitude patients?
If you really needed it, what would happen to you when you drop it off the cliff, it malfunctions, or it runs out? This issue comes up on the Greater Ranges as well.
Learn more about altitude and acclimatization at
High Altitude Tutorial From that tutorial's brief discussion of oxygen , it says
"AMS symptoms resolve very rapidly (minutes) on moderate-flow oxygen (2-4 liters per minute, by nasal cannula). There may be rebound symptoms if the duration of therapy is inadequate - several hours of treatment may be needed."
So whether a few or fifty hits of canned O2 for AMS on Whitney is efficacious is unknown. Maybe Kurt Wedberg can chime in, he has more high altitude experience than all of us here.