WEll, It seems that I am very lucky, as it's just the one hank that had a bit of a stale smell.That one hank, was not stored properly. All the rest of it is just fine...stored in plastic etc...
And no moths...eek!
I remember years ago, as a child watching my mother shaking yarn over plastic, and listening closely, just as YH did, to check for larvae..
A yarn owners nightmare, I'm sure!
As for putting it in the mocrowave, it takes a much braver soul than "I"