We have been talking about fecal odor in the forum lately, first of all how long have you had your odor? Some have mentioned fecal smells coming from the rectal area. Do you ever feel like you have any sensation after, during or before bowel movements, are you having trouble with bowel movements?
Do you ever feel any burnng ect,or do you experience itching? if not then your problem could be coming from else where. Some have mentioned that after a bowel movement they smell like fecal odor even more. You really should go to a Gastrointesinal doctor and get an examination and have him/her do an exam in the rectum area just to see if anything may be wrong.Or are you having problems with gas or stomach problems?
In the meantime start eliminating sugar from your diet, start a cleansing regime and take some probiotics with extra strains,and clean your colon, they have the original colon cleanse and just start there and see what happens. In the meantime pay attention to your body! And don't just focus on the smell.
I'm sure other symptoms exist but sometimes we miss them because we just focus on the odor. Lots of times our bodies are trying to tell us something but if you just focus on the smell you will miss it, be encouraged.