they may be tonsilliths. tiny accumulations of food and other debris that get trapped in the crypts/holes in your tonsils and the surrounding tissue. they tend to smell and/or taste nasty since the warm moist environment of the throat causes this material to decompose. this is just a guess however since i have no way of examining you.
occassionally i have small smelly plaque like pieces that i can cough up or "draw" up from my throat. what are they?