Don't make a Friendly Alien sick

The danger of germs when it comes to aliens goes both ways. The alien could make us sick or we could make the alien sick. If you ever encounter an alien keep the germ factor in mind. If you encounter an alien, run away. Unless, the alien appears to be friendly. Don't judge an alien by its appearance. Aliens that look horrible could be friendly. Judge an alien by its actions. Also, I don't investigate places people have seen aliens because of the germ factor. An alien bug killed an entire Mexico Team at Coyame. UFO hunters then wants to dig up pieces of the ship. I am not taking that chance. The Gods of Eden book by William Brantley had a great chapter on aliens causing the black death. You don't want to experience War Of The Worlds, in reverse.