OK - since Dr SamIAm took the time and trouble to answer this post in private but the answer never got to the boards to enlighten the rest of you...here it is:
Asparagus smell is caused by a metabolite in your body called Methanethiol. Your kidneys dump it into your bladder when they are filtering and cleansing your system, and it comes out in your urine. Did you know that not everyone's urine smells when they eat asparagus? That is determined by how the metabolites in your body operate, and how much they are in balance and able to cleanse your body and send things into the kidneys for processing.
Methanethiol is composed mostly of sulfur (6 components) mixed with hydrogen and some carbon which also causes the smell in rotten eggs and cabbage)
OK? And while we are on the subject of PalJoey's post...I presume you have done the appropriate research on all of these Joey? I mean, good scientific research requires more than one sample under more than one type of condition...so...get to work, my man!
"Life is a lesson in humility"