 [ Symptoms ] how can i prevent and treat groin odour [ Disease ] male or female assuming you do not have any infection vaginal skin etc  or poor hygiene habits the best way to reduce groin odor is to control odor causing bacteria and sweating use a good antibacterial soap shower often up to twice a day if you need wear clean fresh underwear daily for men consider boxers over tighty whiteys for women use cotton undies that breathe better even though these granny panties may not be the most attractive girlie thing to choose if all fails see your medical provider to see if there is an underlying medical reason for the odor issue