i think it is the nature of the beast. my dentist offered to test me for tolerence to different composites. i couldnt afford it so i asked which one was tolerated by the most people. the answer was a resounding diamond lite. i had som big fillings so i have composite against composite inbetween some teeth. they used to smell like a sewer when i water picked until i started back with the oil pulling. i have to water pick. flossing just doesnt do it.