Asparagus Pee

Why is it that when one eats asparagus it makes their pee smell?

The Master speaks: http://www.straightdope.com/classics/a2_383.html

Note however, that the report has an error in it. (I don’t remember where I read the update so I can’t provide a link at this time.)

The report states that only some people provide the urine odor. Well, someone finally had the bright idea to have the smell producers smell the urine of those who seemed to not produce the odor. Lo and behold, it turns out that everyone produces the odor, but only some people can smell the particular odor.

Mystery solved.

I’ve noticed the same phenomenon when I eat Sugar Smacks. Shortly after, my pee smells just like breakfast.

Yikes, they actually have pee-sniffers? I’ll never gripe about my job again. :slight_smile: