For instance. Wild worms can carry parasites and germs that can be harmful. It comes down to the soil conditions they are living in and the environment. Worms that are farm raised for eating are fed pest-free food that helps keeps them clean and parasite-free. This is why buying worms from a reputable dealer is preferable to going out and hunting your own worms.
Infinity has no end. Infinity is the idea of something that has no end. In our world we don't have anything like it. So we imagine traveling on and on, trying hard to get there, but that is not actually infinity. So don't think like that (it just hurts your brain!). Just think endless, or boundless.
The other possible candidates are Captain America: Civil War, the new Spider-man film, Guardians of the Galaxy: Vol. 2, and Black Panther. James Gunn has confirmed that there is not an infinity stone in [Guardians of the Galaxy Vol. 2](tag:1081113). So, that's out of the way. Black Panther is the last film before Avengers: Infinity War Part 1 and to me, it'd be a bit late to throw the last stone into the game right then.