Hi.. Thanks for the query.. As per your complain snorting cocaine can cause irritation to the lining of nasal mucosa as well as it can also cause irritation to the sinus lining and lead to inflammation which can in turn lead to discharge of inflammatory fluid, mucous and cause pain and burning sensation.. I would suggest you to completely stop snorting or inhaling cocaine and you can do steam inhalations and saline nasal irrigations..In case if the nose feels blocked or congested you can take decongestant nasal drops like otrivin or nasivion.. You can take anti-inflammatory painkiller like Ibuprofen to relieve pain and burning and reducing inflammation.. Hope this helps.. Regards.