Yeah I think I know what you are talking about. I used to get those on my tonsils whenever I poked at them with my tongue. Those things are pretty smelly. Maybe you should ask a dentist about them and why they smell bad.
Also, have you tried brushing your tongue if you have a white coating on it? Everyone usually has a white coating on their tongue when they wake up so they floss, mouthwash, brush teeth, and later brush their tongue with their toothbrush. I'm just helping out if you have the white coating