Images not appearing on site; accessible directly through url

Question

I have an HTML site that is using several images that do not load in Chrome [edit: and in some people\'s Firefoxes, not mine].

Using Chrome inspector I can see that

Answer 1

The host uses hotlink prevention, i.e. they're blocking the usage of their images from outside their own domain.

Answer 2

The non-loading images are named ad-something..

That means you have an ad-blocker (browser plugin) that is blocking those images thinking that they are advertisements..