Jacqui Lambie should resign from Parliament if she is not going to take her job seriously, government MP Craig Laundy says, following the Palmer United senator's warning that Ebola-infected "suicide agents" could attack Australia.

Senator Lambie on Wednesday asked the Vice-Chief of the Defence Force Ray Griggs, who was appearing before Senate estimates, about the theory.

"Do you have any information to suggest that Australia's enemies could attack our country or military using the virus, for example with suicide agents who are affected with the disease, or have access to bodily fluids containing the disease, and what is your contingency plan to fight this?" Senator Lambie asked.

A diplomatic Vice-Admiral Griggs said: "I don't believe there is any evidence to suggest that that is a likely course of action".