This summer we acquired a kitten from my sister-in-law (she adopted a
stray that was pregnant - surprise!).

Well, this kitten has a body odor problem.  I don't know how to put this
nicely, but he smells like butt.  Not like poop, but like sweaty butt
(human).  It seems to be emanating from his haunches, and when he sits
on you, or anything, it smells like sweaty butt afterwards.  It's really
quite unpleasant.

His brother and two sisters have the same problem.  They've all been to
the vet, are all sterilized, and have no health problems.  Even my
sister in law has noticed, and she's not exactly the queen of clean or
offended by odors (she lets her litterboxes overflow onto the floor
before cleaning them, for example).

I love this kitty, and plan to keep him, but I wish I could let him sit
on my lap without having to get a towel for him to sit on.  Would weekly
baths help?  My husband has offered to do this.

Any ideas on why he smells like this?  Are there certain breeds that do?
 He is a mix of something unusual because he meows silently and squeaks
or chirps instead.  He looks a lot like the Somali breed in the cat book
I have.  His coat is very soft, the softest I've ever felt, and he is a
medium haired cat with a long haired, fluffy, raccoon like tail that
curls at the end.  He's also a very calm, gentle cat, who doesn't bite
or scratch.

Any information or advice is greatly appreciated.

Dawn