The more effective way would be to take care of the odor. The best thing to do is to brush your teeth twice per day, floss and eat gum. If this doesn't help, you should talk to your doctor about it.
The easiest way is to open your mouth and speak to someone.
Handgagging is when someone puts their hand or hands tightly over someone else's mouth. The result is that they are completely unable to speak or move their mouth, and some people enjoy the sensation.
When someone looks at your mouth as you speak, it could show that they are focusing on your words and trying to understand you better, or it could indicate that they are trying to read your lips if they have difficulty hearing or understanding what you are saying.
It means that they suffer from not being able to speak without using bad language.
Yes, it is quite rude. It's similar to whispering in front of someone.
Try to think your speaking to a best friend.
People don't say not to speak with your mouth open, they say not to eat with your mouth open.
Gagged means you are unable to speak. Let's say someone duct taped your mouth or stuffed a cloth in your mouth. You cannot speak so you are being gagged.
It appears when you move your mouth and speak.
I'm not sure about 'someone's MOUTH' , but Genesis 2:7 tells us "...And the Lord God formed man of the dust of the ground, and breathed into his nostrils the breath of life; and man became a living soul."(KJV)
"Bite off more than you can chew" means to take on more responsibility than you can handle. "All bark and no bite" describes someone who talks tough but doesn't follow through. "Hold your tongue" reminds someone to stay silent or not speak out of turn. "Shoot from the lip" means to speak without thinking or speaking recklessly.
A river.