Re: small cut on my penis on edge of urethra
If it is as you say just a small cut it will heal very nicely given time. The important thing is to make sure that you are keeping it clean and dry, normal showering every day will be fine here. This may also help the odour you talk about?
Dont forget that urine is sterile as it leaves your body so this should not cause you any trouble at all, nor I doubt will erections. If you are worried about the cream just use a normal antiseptic cream, a tiny bit in your urethra will not hurt you. When the cream you used said not for internal use it meant not to eat, drink or swallow.