Are these cum stains?

I was away for work for two days and came home and found my wife’s clothes that she wore when I was gone. These are her underwear. Are these cum stains I’m seeing?
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Cum usually has a very distinct smell after a while… save them a couple of days and see if they still smell like her, and not pungent cum smell.

You could also send me a pair to enjoy and evaluate for you! I would be happy to do an thorough average Joe tribute for them too!