you should consider several things when deciding to neuter... the way your dog looks, or the way you think he should look is NOT one of those things. it is a human downfall to associate social status or acceptance with reproductive organs. you should be asking yourself "what is in HIS best interest?" not "what will make ME feel better?"
anyway, dogs are dogs. they are gonna smell like dogs.
but if he has a serious funky odor, then changing his diet should help. i think brushing his coat and wiping him down will also help.
my opinion is an outdoor dog should get a maximum of 2 baths per month. An indoor dog 1 bath every month.
~ jo and Gotti Boi (aka Thunder Thighs, aka Jughead, aka The Doo Doo Monster, aka Sexual Chocolate, aka Mister Smiley, aka Sofa King)