In "Fire and Fury: Inside the Trump White House," the author Michael Wolff reveals the strict personal rules imposed by Donald Trump. He instructed those around him not to touch anything in his space, emphasizing the importance of not using his toothbrush due to a longstanding fear of being poisoned. This fear influenced his dining habits, leading him to prefer meals from McDonald’s where he felt the food was safe and prepared away from prying eyes.

Additionally, Trump took control of the housekeeping situation by deciding when to have his sheets changed, insisting on stripping the bed himself. This behavior reflects his desire for personal security and control in his environment, illustrating a unique approach to living and maintaining boundaries within his household.