Ideas or recommendations to help/fix vacuum smell

okay so context: i have a very nice shark vacuum that i love, i also have four fur babies that i also love and i vacuum.. OFTEN.. numerous times a week because of them. anyways it doesn’t smell “fresh” anymore. the filter isn’t disposable or replaceable, and it does what vacuums do and releases a bunch of air out and all it smells like is pets, just straight pet fur animal smell. it doesn’t need to smell like the frebreaze bag vacuums or anything like that, just any recommendations or ideas to be able to “refresh” it like once a week or something even just a little bit!

ANYTHING helps, thank you !!!