What does sperm smell like? Why do they say onions? I smell like metal.

Sperm is an important part that men must have. Sperm is a part of semen, a combination of sperm and prostatic fluid, which is discharged after sexual intercourse. Semen is generally transparent or yellow, and normal semen has a faint chestnut shell-like smell, because semen contains protein, which smells like jelly, and finally it is transparent liquid with a little fishy smell.