We have the travel component that is joomla 3. Component name is Koparent.
You have to add following option in advert (backend).
Show on category page (NO / YES) –
For more understanding, see attached image.
If Yes selected in admin, advert will show on category page otherwise not (on frontend).
Category page: [login to view URL]
Note: You have to do it on test server and then after confirmation, move to live.