NETTLES!
Short story but painful. I was working over at my dad's house last evening - doing some landscaping - my shovel released the familiar aroma of catnip. I love the smell. Those of you familiar with weedlike species may know that catnip and nettles have a similar appearance. Having just whiffed catnip and looking down I assumed that immediately below my feet was the perperutator of the heavenly scent - with gloved hand I plucked one out and shoved it in the direction of my honker - I soon realized the error of my ways when the sensation of a thousand mad as hell stinging bees throbbed my snout.
We laughed about it afterwards - but please, do not sniff the nettles.
Jeff