It probably didn't hurt. In fact airing out a kilt is a good thing to do from time to time.
But, if you are in a moth rich environment and/or if you are really worried about it, you can wrap each kilt in plastic and put them in a deep freeze for a couple/few nights. The actual period of time seems to be a subject of uncertainty. It's supposed to kill the moth eggs that otherwise would hatch out and start munching. But, I don't know of any research that substantiates that prophylactic effect. It sure sounds good though. 
Last edited by mookien; 16th July 13 at 04:43 PM.
Reason: Correction
I changed my signature. The old one was too ridiculous.
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