Smelly genitals

[Teacake]

My male unneutered guinea pig has a very smelly genitalia area. More so than my 4 month old males. Why is this?

 

[Swissgreys]

Boars often need a bit of help keeping their 'boy bits' clean.
There is an excellent guide here:
Boar Care: Bits, Bums & Baths

 

[Piggies&buns]

Boys can be a bit more smelly - scent marking, smegma, grease glands, sperm rods, they aren’t always entirely pleasant! Sometimes those bum baths are essential with boys! The link should help you

Boar Care: Bits, Bums & Baths