FIFA has been urged to conduct an independent investigation into claims the Qatar 2022 World Cup bid team attempted to sabotage rival bids.
British MP Damian Collins, chairman of the Digital, Culture, Media and Sport select committee, said Qatar should face sanctions, if they are shown to have broken rules imposed by football's world governing body.
An article published by the Sunday Times alleges the Qatar bid team used a PR agency and former CIA operatives to disseminate fake propaganda about its main competitors, the United States and Australia.
The newspaper said it had been passed documents by a whistleblower who worked with the Qatar bid.
"It requires a proper independent investigation and FIFA should make clear that will happen," Collins told BBC Radio 5 Live.
"If the Qataris have broken the rules, they should face some sanctions."
According to The Sunday Times, the alleged smear campaign included paying a professor $9,000 US to write a damning report on the economic cost of a US World Cup, recruiting journalists and bloggers to promote negative stories in the US, Australian and international media, and organising grassroots protests at rugby matches in Australia.
Qatar's Supreme Committee for Delivery and Legacy said it "rejected" all the claims made by the paper.
FIFA rules say that bidders must "refrain from making any written or oral statements of any kind, whether adverse or otherwise, about the bids or candidatures of any other member association which has expressed an interest in hosting and staging the competitions".
Qatar beat rival bids from the United States, Australia, South Korea and Japan for the right to host the 2022 World Cup.
The leaked documents also revealed that a group of American PE teachers had been recruited to ask congressmen to oppose a US World Cup on the grounds the money would be better spent on high school sports, the paper claimed.
Lord Triesman, former chairman of the Football Association and England bid chairman, urged FIFA to "look at the evidence thoroughly", and said Qatar should not be allowed to "hold on to the World Cup" if they were shown to have broken FIFA rules.
He told The Sunday Times: "I think it would not be wrong for FIFA to reconsider England in those circumstances... We have the capabilities."
The Qatar bid team has previously been accused of corruption, but was cleared following a two-year inquiry by the FIFA ethics committee.
In a statement, Qatar's Supreme Committee for Delivery and Legacy said: "The Supreme Committee rejects each and every allegation put forward by The Sunday Times.
"We have been thoroughly investigated and have been forthcoming with all information related to our bid, including the official investigation led by US attorney Michael Garcia.