'Everything, Everything' trivia and fun facts

Changes

In the book, Olly shaved his hair and has blue eyes.

Code

When Maddy and Olly exchange phone numbers, the last four numbers are 0117, which look like the name Olly.

Look like

There is a scene in the movie where the astronaut is sitting on a bar stool in a diner that Maddy created. This scene is a reference to the famous 1942 painting "Nighthawks" by American artist Edward Hopper.