Went for a pinch earlier this afternoon and had a horrid realization: I couldn’t smell it! I’ve had a head-cold for a bit, and I can still breath fine through my nose, I just can’t smell anything (not even O&G or Cheese & Bacon!!!). Has anyone else had this problem? Any solutions?
You may have to wait for the head cold to pass before you can smell anything. I had a similar problem a few months ago and none of my menthols were getting through. You could try a Neti pot rinse if you’re up for it, but even that won’t clear the head cold. Maybe use this as an opportunity to get through some of your lesser favourites. 
A sinus infection can do all sorts of funny things to your smeller. When I lived in wyoming Id get a sinus infection every couple of years that left a smell of artificial pina colada in my nose for at least a week… it made cigarettes awful. I think more than likely your sense of smell will return.
Now is the time to use up the snuffs you hate/like the least. I’ve had my nose do that before so I pulled out the Toque absinthe and finished my 10g tin.