How to use "germs" in a sentence

And all around it, some in their overturned war-machines and some in building-machines, and ten of them lying in a row, were the Martians - dead! They had been killed by germs against which their systems could not fight; killed, after all man's machines had failed, by the smallest things that God has put on this Earth.

These germs of disease have killed people and animals since the beginning of time, but over these many years we have developed the ability to fight against them

But there are no germs on Mars, and as soon as the Martians arrived, as soon as they drank and fed, our tiny friends began to destroy them

I know very little about medical matters, but it seems to me most likely that the Martians were killed by germs.

Certainly, in all the bodies of the Martians that were examined after the war, no germs were found except ones that came from Earth