@Saving so nice to hear there's other people with the same problem! We have been giving regular baths to our b, so I don't know if that really helped or not. Anyways, it took a while for me to bring Nova again to the dog park, because I was a bit afraid the same situation would happen again. I was there a couple of days ago, and no one tried to hump her. (I must say all dogs had same age approx.)
Thank you for your comment replies! 