My inbox quickly flooded with pleas for help from people with friends or family members under the spell of these influencers.
The most striking email was from the son of a leader of Britain's conspiracy community.
Sebastian Shemirani got in touch because of his fears about his mother's impact on public health - and their relationship.
Sebastian's mum Kate Shemirani has collected tens of thousands of followers with false claims - including denying coronavirus exists, blaming the symptoms of Covid-19 on 5G radio waves and likening the NHS to Nazi Germany. She's spoken to crowds of thousands at protests in London.
"This is her five minutes of fame and when this is over, people will forget about it," Sebastian told me.
"But you know the disaster that goes on within my family and the relationships that she's losing now - that stuff stays forever."