How do I get rid of smell of antique hats?

Hi Charlene, Here's a video that may help: https://www.youtube.com/watch?v=KYqLQFFC0Ag

Good luck!

Here are a few ideas on how to get the smell out: https://www.esquire.com/style/mens-fashion/advice/a41640/vintage-clothing-smell/

Fabreeze for fabric

Liberally sprinkle the hats with baking soda and stick them in a plastic bag. Seal the bag and leave for a few days. Remove the hats, dust, vacuum the baking soda off. Repeat if necessary.

Febreeze will not work. Febreeze has an enzyme that coats odors on a microscopic level. As the coating gets heavy they drop with the odor. Any aggitaition/movement like sitting down on a sofa or walking on a carpet/floor will break the coating and the odor comes back.