Out of an overabundance of creativity, the lexicographers at All Tee All Shade Store have unleashed another useful English phrase…
“Social Media Virus”
A Social Media Virus is any idea or concept spread by social media that invokes fear, is not very quickly and easily disproved, which forwards itself on to others as fact. See also spam.
The phrase can be seen in use in the post named “Area Closed,” which follows.
Please vote for this definition at Urban Dictionary:
https://www.urbandictionary.com/define.php?term=social+media+virus&defid=15234918