To the OP: I think it’s quite unusual that you have to wash every day with antibacterial soap to avoid a bad smell. I also agree with those saying that antibacterial soap is probably too harsh to use on such a delicate area and that it could be killing off beneficial bacteria. So I guess either you have a mild but persistent infection or it’s something to do with your diet - what you eat naturally has an effect on what you smell like, so it could be worth considering if you eat lots of stuff that might contribute to an odour. Excessive amounts of red meat, fish and seafood, garlic, onions, coffee and certain vegetables can be culprits. Smoking can also have an effect.
But yeah, washing once a day or so with ordinary, mild shower gel or similar should be more than enough to keep any bad smells away. I only ever notice a slight smell if for whatever reason I let either semen or my girlfriend’s wetness remain trapped by the skin for some time without washing it off, and even then, it’s gone after a quick wash with mild soap.