Dear Elfin,
I sincerely hope that your sinus issues clear up soon.
I had a virus attack my olfactory nerve a number of years ago. For a while, I could smell absolutely nothing. Couldn't smell gas escaping from the stove. I could not smell the difference between Italian parsley and cilantro. I burned a number of items when I wandered away from the stove and got distracted by something else. They'd overcook or burn and I'd return to find a scorched mess. I'm lucky I never had any fires or poisonings.
Eventually, great deal of my ability to *perceive* smell returned, but things have never tasted the same since I had that virus. Interestingly, if I don't *know* what it is I'm supposed to be eating, I sometimes have a hard time discerning what I'm tasting. Ocassionally, I've had to ask a fellow diner what they're tasting to have a useful frame of reference.
So, I have some ability to taste critically, but it relies as much on experience/knowledge as it does *taste*.
At one LTH picnic, I remember putting my nose directly into a durian and not being able to smell a thing.
So, short answer, Cathy's right. You need a friend/companion to help you smell. Your experience with food will, hopefully, help you taste if things are in balance. Remember, in addition to smell, there's also sweet, sour, bitter, salty & umami in 'taste'. But, wow, a lot of *taste* is actually *smell*.
If this doesn't clear up, I'd advise getting a gas/carbon monoxide sensor. Another side effect of this problem is a lessened ability to smell if food has gone off or not. I can attest that living alone and not being able to smell food that has gone bad [but not to the point of visibly so] can have some, um, unpleasant side effects.
Giovanna
=o=o=o=o=o=o=o=o=o=o=o=
"Enjoy every sandwich."
-Warren Zevon