allergies
A colleague came to work with a stuffed nose; due to allergies he said. I checked the pollen levels, nothing to worry about—except if you're highly sensitive. He later told me, he's allergic to nuts, and has been eating some for the last couple of days. I waited for a person jumping in front of me to tell me i'm on some hidden camera show. The colleague is also afraid, the alien race that created us might come back and have their revenge.