Welcome to the forum.
The commonest cause of bad odour in urine is dehydration
, inadequate intake of water results in production of smelly, scanty urine. Drink water adequately, take soups, juices, fruits and berries to flush out the toxicity from your body system. The other cause is UTI, get urine test done ( routine and culture ) to rule out E. Coli infection, pus cells, etc.
Developing uretheritis, prostatitis
, bladder infection , cystititis can be a cause. Get a blood test
done to rule out diabetes, phenylketonuria
, liver failure
as you are passing deep colored urine. normal urine is straw coloured.
Avoid smoking, alcohol, caffeine or any other addiction. Get examined clinically and treated well. Take care.