Terrible smell coming from my nose?

I had a fungus on my skin and my dermatologist thought it was a yeast problem, so he gave me l yeast infection pills.When I started taking htem (1 a week) you have prably never noticed, (try it) but when you swallow, you dont breathe fresh air out of your nose, as in inhale then exhale, its old air.Everytime I do this a super duper funky smell comes out of my nose, and sometimes just normally without swalling.How do I make this stop?Its been like 4 months since i took the pills and its still jacked up. has this happened to anyone before?