The reason for the bad odor is the same reason for the bad odor after eating garlic. When the allicin from garlic is metabolized, sulfur compounds is excreted through the breath and sweat. The same thing happens when you eat DMSO, which also is a sulfur containing compound.

There's no way to actually remove the smell - except by avoiding garlic and DMSO, as the sulfur has to be excreted. The best way would be to wash your body well. Home remedies include washing with lemon, eucalyptus, menthol and camphor.