Flameout and Refrigeration?

I am curious to know if Flameout will be ok in a suitcase while traveling and wont be near a refrigerator for awhile? And when I mean in a suitcase, I mean for 3 weeks or so, not just a day or two.

As long as the temperatures in the suitcase are not abnormally high, it should be fine.

Thank you Mod Brian, I am off to Europe which is pretty cold so I think I am good if high temps are my only concern.