getting stressed after dental

Daisy has just come back from having a dental and sooty keeps trying to hump her. She isn't inter
ested and keeps running off. Would this be stressing her at all? they are a fully bonded pair both neutered. He also keeps making soft grunting noises when he is chasing her not experienced this with my other male bun.
Just realised this is in wrong section sorry was writing this using my phone! how can i move it?

She might smell funny from the vets so he probably just wants to make sure she's still his. Perhaps you could separate them for 24 hours until she's fully recovered?