I love this simply because I'm shooting fart clouds.
I saw another commenter @Dekotale had a similar issue to me where the fart cloud could keep going and hit a bomb, but after further testing I found this only seems to happen when the fart cloud barely clips the target. A clean hit seems to always remove the fart immediately. I'm not sure how you coded the collision for detecting if a target is hit but there seems to be a discrepancy between where you register a hit and add to the score vs registering a hit and removing the fart cloud
I gave this 5 stars for everything except theme because I love it, only reason I deducted points for theme was that it was less 'finding the target' and more 'shoot the targets' :)