The recent post I saw here on NL enundated me to write this. Just like there are physical causes to sickness there are also spiritual causes. Briefly, spiritual causes of moth odor are:

*Back biting: when you talk about people behind their back is like you've eaten their meat. I don't need to tell you what happens when someone eat an uncooked raw meat.

*Eating/drinking haram: no doubt that anything that is made unlawful to us is harmful to our health.

*Talkativeness: talking too much is not what successful people do. A good believer talk less and act more.

I would have like to have said more but I tried to stay as brief as possible because too long lines attract few readers

What is then the way out
Some of the things one can do to cure or reduce this type of mouth odor are:

*Stay away from drinking and smoking
*Stop backbiting people
*Avoid drinking and smoking
*Make a lot of "istigfar" i.e seeking of forgiveness
*Make "miswak* a common practice- using chewing stick

May God Almighty guide us all.