[ashark]

FWIW mine need a wash after ~4-6 wearings or they smell. I haven't tried the vodka-spritzing trick I've read about, though, which may let them go longer.

How they're stored probably affects it some. I have better results hanging them up rather than letting them sit on the floor, even if I'm just going to put them back on the next morning.

[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.