I have a male cat who has been fixed and we can't be for sure but we are thinking this only started after he got fixed that it is like he is not cleaning himself. This is gross but it is like his bottom stinks bad all the time. What can we do to stop this? He can be on your lap and you have to push him down b/c the smell is so bad. We did pinpoint in is coming from him bottom. Has anyone ever heard of this happening? My boyfriend has always had cats and has never had to deal with this. Any info would be great! Thanks!