Complaints about the poster, which is a request for passengers on the Underground not to eat smelly foods, were made by Italians to the Italian Embassy in London.
The Italian Trade Commission has also become involved because the label of the company, Vallani of Modena, was clearly visible on one of the sausages.
According to a reports, the campaign cost London Underground more than 拢100,000 and it is now being taken down.
A spokesman for the Italian Embassy said: "I just can't believe how naive London Underground was in allowing those posters to go on display on the Underground.
"The man on the Tube is clearly Italian and he is surrounded by Italian salami and Parma ham and you can quite clearly see the Italian flag and the name of an Italian firm," he told the Evening Standard.
In other reports, Italian ambassador, Guido Carboni, said that advertising executives must "never have eaten prosciutto" if they thought it was smelly.
A spokesperson for London Underground said: "We apologise for any offence caused to members of the Italian community or charcuterie manufacturers. The poster was meant to be a light-hearted attempt to dissuade Tube passengers from eating smelly foods."
If you have an opinion on this or any other issue raised on Brand Republic, join the debate in the .