"If I had ever been here before..."

I've never thought of déjà vu a purely a visual thing and as I never bothered to find out what causes it I didn't know that scientists had agreed that it was related to delays in data flows to the brain from one eye as opposed to another.

Now they are not so sure. A blind man studied by researchers at Leeds University apparently experiences déjà vu with his other senses such as smell. Akira O’Connor, one of the researchers says

"It is the first time this has been reported in scientific literature"

But does it seem like the first time...