Was doing better until today

I was doing better the past few days with my anxiety but today I'm freaking out. I'm having phantom smells. This morning I walked to the kitchen in the office to get coffee and thought I smelled vomit. It lingered off and on as I sat at my desk too. Then it shifted to popcorn like, then back to the vomit / stomach acid smell. I'm freaking out because the association with serious medical conditions like stroke or tumor.

Anyone else here get phantom smells?