we eat asparagus a couple of times a week and I must admit I've never heard of this, looking forward a sniff or not as the case may be.
anyone that dosnt already know, the older ones, bend from the bottom up until it snaps,discard the lower part, its tough and woody.
asparagus is amazing stuff its not harvested for at least 3 years after planting, its got no fat, contains no cholesterol and is low in sodium,its high in folic acid and is a good source of potassium, fiber, vitamin B6, vitamins A and C, and thiamin.
just found this:-
Why does my urine smell funny after consuming asparagus?
Most authorities feel that the compound that causes the odor in urine after consumption of asparagus is methylmercaptan, which is a sulfur-containing derivative of the amino acid, methionine. This is disputed by a few individuals who claim that the odiferous compound is asparagine-amino-succinic-acid monoamide, which is derived from the amino acid, asparagine. In either case, the product is formed as a derivative during the digestion and subsequent breakdown of beneficial amino acids that occur naturally in asparagus.
Ref: Merck Index, 862; Food Chemistry, Belitz and Grosch, pg. 271.