[jammies]

Originally Posted by Dion

Some people are so severely allergic to peanuts that just the aroma triggers an allergic reaction, Johnson said.

http://abcnews.go.com/GMA/OnCall/story?id=1358275

http://www.cbc.ca/canada/story/2006/...hma-death.html

That article is old, and the teen mentioned in the article as "dying from a kiss" from her peanut-eating boyfriend actually died of asthma. I'd put about the same credence in the "knife used to cut a peanut butter sandwich" story there, although it isn't referenced without enough information to be certain.

As far as the aroma of peanuts causing a reaction check here where this is debunked.