Slightly
An older friend of mine opened a political joke sent to her in email. It/she somehow loaded the enclosed photo into the template used to create all MS Word documents on her PC. So that whenever she tried to create a new Word document, this photo would pop up! She almost junked her PC - thinking it was possessed by Nancy Pelosi (the topic of the joke) or the Democratic Party.
Deleting the template restored sanity to her world.