Remove certain images from facebook share

Hi!

Im having some problems with my wordpress website. Im using the “Ads by datafeedr.com” plugin to display some ads on my website. The problem is that when I share an article on facebook it finds some of the images in the ads and adds them by default. Im using the Open Graph Meta tags which displays also the correct image, but the ad images are seleted by default. I have to choose the correct one. It isnt a problem for me but when visitors share articles they don`t selected the right image.
Is there any way I can stop facebook from reading certain images on my website? A tag or something to tell fb to ignore those.

Thanks in advance.