Hi Bill,

As a singer who's sensitive to smoke & prone to allergies as well, I empathize with you.
I recently discovered a remedy that helped clear up the problem a lot.
Recently having suffered a bad cold and sinus infection, my doctor recommended using a Neti Pot.
When I first got it I thought it was totally weird, but believe it or not, it really WORKS great, flushing your sinus' of pollen, smoke, and gunk.
I use it once in the morning, before going to bed, and before a gig to keep my sinus' clear to freely breathe and sing clearly through the day/evening.
My doc also told me that using the Neti Pot regularly may also help reduce the chance of catching a cold.

Here's the one I use & recommend:

NeilMed NasaFlo Unbreakable Neti Pot with 50 Premixed Packets

Good luck, - Scott