When i cough it tastes weird in the back of my throat. also when i swallow water it has the same weird taste in the back of my throat. i never cough up phlegm or anything like that though. what could this be? thanks

More info needed: "Weird taste" is not a diagnosis, it's a sign. For diagnosis sis you will have to have hour throat examined, your overall health reviewed, your medications, evaluated, your medical history reviewed, your oral health evaluated, your diet evaluated, you need to be screened for allergies, you may require I'm aging and/or lab tests. Treatment will depend on diagnosis.