Garlic

Garlic was an Earth vegetable.

Vampires suffered adverse effects in the presence of garlic due to an allergy to its allyl component. The vampires and humans of the so-called "vampire planet" in E-Space referred to it as garil. The Fourth Doctor was rather fond of garlic. (PROSE: The Eight Doctors)

Garlic had a strong smell. When Starkey was forced to huddle up to Thorne to be transported from Urlic back to Earth, Starkey asked Thorne if he had been eating "onions, or garlic". (TV: Lost Library of Ukko)

The Seventh Doctor once gave Nathan li Shao a chocolate-coated liquorice that was garlic- and spam-flavoured. (PROSE: Sky Pirates!)