The reason for the wet smell of the navel is considered the following aspects: 1, considered as a local skin infection, mainly due to the skin around the navel is wetter after bathing or swimming, which causes bacterial anaerobic infection, the phenomenon of wet smell, so in the treatment to keep the navel skin dry, you can use topical iodophor for debridement, disinfection. 2, can be considered as an allergic disease, such as navel eczema The skin of the navel is a chronic inflammatory allergic skin disease caused by various internal and external factors, so in treatment you can take oral glycopyrrolate tablets and imidostatin extended-release tablets, while in topical medication you can apply a mixture of mometasone furoate cream and urea vitamin E milk for external use. 3, can be considered fungal diseases, such as ringworm, mainly due to untreated ringworm or nail fungus, or home breeding The fungal skin disease is caused by the transmission of parasites from the pets of the family, so in the treatment you can apply a mixture of bifenbendazole cream and tretinoin econazole cream topically. Therefore, for the cause of wet odor in the navel, you need to go to a regular hospital, under the guidance of a dermatologist, to conduct the appropriate laboratory tests to guide clinical treatment.