What Causes Bad Odour To Urine?

For the past few weeks, my urine has a strong smell which doesn t appear to be different in colour i.e. almost colourless. I have been drinking lots of water so don t think it is related to dehydration and I don t have any pain or burning sensation. Just didn t want to annoy doctor by turning up for what could be just something in diet but cannot think of any changes. The odour is not really sweat. Just strong urine smell