In a screenshot of the conversation, which was sent to The Sun, Ms Vimbsone initially agreed to a viewing but took back the offer after learning that Mr Mboob was African.
“Oh, just saw your profile, its only for European people… sorry mate,” the landlord wrote.
“We are not racist or smt just to be honest, I have friends from Nigeria and all house smell what they cook [sic],” she added, when the man objected to her comments.
Mr Mboob, who is studying at the University of the Arts London (UAL), told The Sun he was “completely shocked” by the response to his request for a viewing.
“Growing up in England, I’ve experienced all types of racism, but this was the first time that I’ve experienced something this absurd,” he said.
“I wasn’t expecting her to even ask me about my background as I didn’t think it was relevant and she even had the nerve to say it wasn’t racist."
He added that her comments had given him “serious anxiety” about cooking African food around his new housemates.
Ms Vimbsone declined to comment on the exchange when approached by The Sun.
In 2017, one of the UK’s biggest buy-to-let landlords, Fergus Wilson, tried to ban “coloured” tenants because he claimed they made his properties smell of curry.
Mr Wilson’s ban was overturned in court after a challenge by the EHRC.
“This policy clearly amounts to discrimination,” Judge Richard Polden said as he granted an injunction against the landlord.
“I find the policy is unlawful. Such a policy has no place in our society.”