What Causes Smell Of Something Burning In Nose?

Hi. I keep getting a smell as if something is burning, which lasts only a moment but keeps happening sometimes as often as every few minutes. It is not a smokey smell but a dry scorching smell. Nobody else can smell it. I am not and have never smoked and rarely drink alcohol. I am on anti-depressants. Would my GP think I was wasting his time with this?