You also wonder if it’s really true, right? As we already know that our tongue does attract bacteria, but not because you were so rude or you might be considered as dog as to stick it out of your mouth.
The bacteria on our tongue are mostly oxygen-free environment which means it converts itself into gases that smell pretty bad. Stand in front of a mirror, open your mouth, and stick out your tongue. See that white stuff at the back of your tongue?? It’s where they become concentrated in the result in bad breath.
To get rid of the bad breath, that white stuff must be removed. Simply brushing your teeth won’t make any different. It only helps to clean your teeth for a while, not your breath. Best advice from me is that you should clean your tongue by removing that white stuff regularly.