2 days ago, I woke at 3.20am to an overpowering sweet cloying smell. I woke my husband who couldn't smell anything. I tried to locate the source without success and now 48 hours later it is finally abating. However, I can now smell faint taint like alcohol but have'nt had any for over 2 weeks. I have under active thyroid problem and sinus problem. Could it be that. I felt slightly down when the sweet smell was at its strongest as it tainted all food and drink. Any suggestions would be helpfol.