All people have neurotic moments (That someone is looking at them, or believe in some mild conspiracy or whatever). The people who say they aren’t are lying or good at hiding it.
Someone close to me and typically pretty rational has one where she thought bugs were in her bed after repeatedly bug bombing the house. Half the State of New Jersey think we are in the midst of a drone invasion. Thank god we invented the scientific method and other tools for reasoning that can compensate for our flawed perceptions.