<s>[INST] hi i wanted to know whether i am in serious danger here. i recently had a root canal and a lot of fluid went into my nasal cavity[i think] and for the past 5 hours my nose has been letting brown stuff out.. and when i lay down i feel a nasty liquid being swallowed. I should add that i was in a weird position that forced those liquids to end up there.. what can i do to get rid of this ?? [/INST] Thanks for using Chat Doctor. Read your query. It is very unusual for the fluids used in the oral cavity during the root canal treatment to enter the nasal cavity as you have mentioned. Even if the root of the tooth is in proximity of the sinus or have a direct access, small amount of solution used should not cause any damage. If there is sudden increase of swelling and pain, report back to the dentist and have it checked. Careful monitoring may be required to be followed by a dose antibiotic, nasal decongestants and more required treatment. Hope this was useful. Thanks and regards. </s>