How to permanently remove body oil odor from fabric??

Hi Sherril, have you tried a baking soda paste left to sit on the fabric, then washed off?

Here's an idea that uses shampoo Sherril! Maybe this can work for you.

https://www.mollymaid.com/cleaning-tips/laundry-rooms/body-oil-stains

Baking soda and liquid detergent mixed together into a paste. Put it on the fabric and let it sit for about 30 minutes then wash it off.

White vinegar is a powerful odor neutralizer and works wonders on underarm areas of fabrics. Fill your washing machine with water, then add 1/3 cup of white vinegar. Turn off the machine and let the garment soak for 20 minutes, then launder as usual. Washing Soda.

Those are all good suggestions. I should have specified that the body oil odor has lodged itself in a set of cotton, King size sheets.

try soaking in dawn dish soap