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Last month, reports suggested that the ITV1 drama will go live in October 2012 as part of its 40th anniversary celebrations.
However, speaking on This Morning today, Blackburn commented: "The rumours of the live ep are just that - rumours. Just rumours.
"We could do it and never say never. There is a little bit of me that's always excited by that. They're just rumours - but the 40th will be massive."
Show sources have also indicated that Emmerdale's 40th anniversary episode could centre around a big disaster storyline similar to Coronation Street's 50th birthday tram crash stunt.
However, responding to the suggestion, Blackburn said: "Again, it's just rumours. I think there is a danger with these big stunts that eventually from the audience's point of view, it's just another stunt."
Emmerdale continues tonight at 7pm on ITV1.
> Read our Emmerdale spoilers and news
