About a month ago a fissure developed near the entrance to my nose , there is a build up around the fissure of what I believe to be either mucus or white blood cells , if I remove the build up on the fissure it comes right back . At around the same time I noticed a very foul smell in my mucus don’t know what that’s about but for several years I had another type of fissure anomaly further back in my nose any this one would scab up and block my air passage on that side of my nose but somehow that one finally healed . I’m not sure what to do or think about the fissure and unpleasant disgusting smell of the mucus.