I keep smelling sulfur and tasting it in the back of my throat. What can cause this?

Sinus Problem? The smell and taste of sulfur raises that question of something going on in your nose, which could be running into the back of the throat. It could be related to a cold, allergies or even a sinus infection. You can try some easy things like irrigating your nose with salt water rinse, but ultimately, you should probably have a provider look to make sure. That way you get proper treatment.