 [ Symptoms ] is the smell of unsmoked marijuana harmful  is the smell of unsmoked marijuana harmful to the brain my cousin opened a bag of marijuana in my house and now it smells in my house he did not smoke he just opened it for a few minutes and closed it  i now have to the windows open airing out the smell  is this harmful  i do not smoke and never will  [ Disease ] mucous occurring in the nose or in the bowel is often caused by inflammation or a need for lubrication a cleansing diet is often quite a shock to a gi system used to eating a normal diet so i suspect this mucus discharge will resolve in a day or so if not going back on a high fiber diet should solve the problem