Penis odour after urinatimg but excellent penile hygiene, i'm uncircomsised,also dribbling after urinatimg,ultrasound normal. how to get rid of odor?

Did you have your : urine checked for an infection as this may be causing the odor

Prepuce is the cause: Your problem is very well known to we urologist.Here is the explanation. Individuals who are uncircumcised and have long prepuce hold some urine inside the prepuce which dribbles out later in the underpants, these are no more than few drops. But this urine on your underpants will cause smell like ammonia.You can prevent it by squeezing the prepuce after each urination or have circumcision.