[soperj]

Apparently you're supposed to put them in the freezer.

[ashark]

I did that once but they came out with freezer-smell (predictably, I guess).

[DKnoll]

I'm not familiar with a freezer smell. I think you may need to pick up some baking soda. :)

[ashark]

Plasticky? Mostly? Like a fridge that's been unplugged (empty) for a while, but less strong.