My son is 11 has Down syndrome and ASD. For 2 years now he has had a horrible odor coming out of his right nostril. All the doctor say everything is fine because they do not see anything in his nose. None of them actually try to smell it and when I say can't you smell that they say no. His caregiver can smell it,anybody that is close to him on a normal daily basis can smell it because they're not afraid to try to smell what I'm smelling. And they have noticed it all on their own. But we have gotten nowhere. I have tried all of the normal things I will spare you and not list them all. All help is appreciated! Thank you so much!