I can hear it on the male vocal: it’s similar to sympathetic snare buzz, (but probably digital in origin).
Even if you have that (male) vocal in isolation, IMO, that’s not fixable in Audacity.
There are noise removal plugin$ which can work without a noise profile.
The female vocal is in need of EQ & de-essing:
those are achievable in Audacity with free plugins,
if you have the vocal in isolation.