To remove the perspiration smell from a silk garment, simply spray the garment with vodka and allow it to completely dry. While vodka doesn't remove visible stains, it does kill the odor-causing bacteria that seeps into clothing.
Fill bottle with vodka
Pour vodka into a small spray bottle. Any brand or class of vodka works equally well.
Saturate any smelly area
Spray the vodka on any area that smells of perspiration. Be sure to completely saturate the area on both sides, or the smell will remain.
Dry the garment
Hang up your garment to dry. Allow the areas sprayed with vodka to dry completely (about 24 hours) before wearing or storing garment.