Smelly cat

I need help withmy cat's odor problem. My cat's back end is really smelly to the point that i can't have her near me. What can I do about this problem?

First of all what do you mean by smelly?And how long has this been going on?

I have two cats and only the one has this problem. It has been going on for about a month. I can't explain the smell but to say that it comes from her anus, and it is really strong. I thought maybe it might be her anal sacks but she is not licking any more than usual or scooting.

Hmmmmmmm.Well the only thing I can suggest is to take her to a vet.She may have an infection of some sort.

Has there been a change of diet or litter?

Have you examined the stool to see if there is any blood/mucus / worms in it? Is the cat crying/losing weight?

I wonder if the anal glands are infected? Are they licking there alot or scooting their bum?