Why is that after sleeping for long hours ,we get smelly mouth but eating the whole day?

Question

never smells our mouth, can u give me an idea ..

Answer 1

The reason for morning breath is that there has been no moisture/water in your mouth all night. During the day, you drink, and keep your mouth hydrated. The best thing to combat bad breath is to drink lots of water, keep your mouth moist.

Answer 2

Because during sleep when your mouth is a closed wet warm environment, the bacteria are loving it and having a party!