Hi,
Welcome to HCM.
Foul smelling discharge from genitalia and perineal region definitely gives rise to suspicion of
fungal infection, but there should be other associated symptoms like itching and scaly skin lesions. I suggest you maintain good personal hygiene, keep those areas clean and dry and avoid tight clothes to prevent sweating in those areas.
If symptoms still persist, get a stool exam and perianal swab examination to rule out infection.
Thanks.