Hey Stayaway - I seem to have the same problem - for years I smoked out of a pipe - 2 or 3 a day and I had 3 sinus infections every year - I had sinus infections before I smoked, but smoking made them a little worse each time.

In July I got really sick - there was a mold issue in my apartment and I stopped smoking - I even had to move out - now that situation has been dealt with and I moved back in 3 weeks ago. I switched to using a vaporizer and was fine until a few days ago - my sinus are 'active' again, sometimes when I use the vaporizer my sinuses feel 'singed', and the last 2 days at work my energy felt depleted. Now I have a bit of a sore throat as well. I thought the vaporizer would stop affecting things, but I"m not sure that it doesn't affect anything.

Any ideas anyone?