A transmitter of undesirable opinions, sentiments, or attitudes.
- ‘He takes the idea a step further with a fascinating theory about the personalities who transmit those viruses - the Typhoid Marys of social epidemics.’
- ‘Stories like that should embolden smart users so that, instead of accepting their co-workers’ incompetence, they will feel free to mock and ridicule these Typhoid Marys of the computer world.’
- ‘I think Typhoid Marys would be people who push someone to see a show by railing about how dirty/immoral/ungodly it is.’
The nickname of Mary Mallon (see Mallon, Mary), an Irish-born cook who transmitted typhoid fever in the US.