"Snogging someone after they've eaten Marmite," says my gentleman friend (and frankly, he should know), "is like licking paint."
Can't say as I've ever licked paint, but I've eaten Marmite, so I've got a reference point.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk