Bad smell from my nose

I've been having these bad smell coming from my nose.. it smells like feces, and what's really strange is that when I m at home or alone or with my mom....the smell is not there, but when I'm with other ppl itz there especially when they are close..itz super bad then. Itz like d smell just rushes out of my nose. I try to breathe with my mouth, but i can only breathe with my mouth for so long...Itz ruining my social life....i dnt get close to ppl anymore. What can i do?? Does it have anything to do with the wisdom teeth??? I heard it has some correlation with it. Tweet