If you don't have any mechanical parts like the turbo fan, you can immerse your goggles in water, with mild soap.
If you have a mechanical part like the turbo fan, then get a soaking wet wash cloth with some mild soap and saturate the foam as much as possible, dry thoroughly and see how that works for you.
*remove lense deffinetely! ant fog layer will dissapear if you dont. remove strap if you dont want washed
air dry or put on strap and put goggles over toilet paper roll or paper towel roll.