When you wake up in the morning with yellow urine and a strong smell, you may have concentrated urine. Urine with a large amount of metabolized organic and inorganic salts, as well as a high concentration of urinary ammonia, will have a foul smell of urine. This condition may be related to drinking little water, or it may be a result of eating a lot of protein the day before, along with a lot of saltier foods. It is recommended that in this case you should drink more water, eat more various fresh vegetables, fruits, coarse grains and coarse cellulose food, you should control the intake of sodium and protein, drink more than 2500ml of water per day, observe for 2-3 days to see if there is a significant improvement in the yellowish urine and big smell. If there is no improvement, you should go to the hospital for a routine urine test.