Hi ,
It is strange that you say it is food as it definately not. I went to see a doctor about this and they have a special name.
I had them very often when I was around 11 years old. AS years went they started increasing. At the age of 18 I removed my tonsils as I was getting tonisllitus once a month with a heavy fever. I no longer have any of the smelly white things since i removed my tonsils. Thank god as they would pop out whilst havIing a converstaion!! I even use to have dreams about them!
The ONLY sure way to get rid of them permanently is to have a tonsillectomy; this is drastic though.
Do you have them frequently?
Go to www.wikipedia.org for options for self-treatment.