More questions, will capped honey pick up the Menthol odor?
I don't know for sure, but I wouldn't suggest trying it either. You should consider buying queens that have been bred for tracheal resistance and forgo menthol all together.
What should I do to brood boxes now or before next spring?
Clean out the dead bees as best you can and close them up so nothing can get in and damage them.
Can I put one of the almost full superson top of my last colony for food supply?
Sure if they need it, just try to do it on a warmer day so that you don't chill the cluster if they are up top.
I wonder if the only colony that is still alive is because it is the swarm I captured last summer?
Could very well be, the queen may have come from tracheal resistant stock
Should I requeen that hive? They were definately a differant type of bee than my others which were Italians.
Yes and maybe
Since most swarms are the old queen leaving, she was most likely already a year old, so will be going into her 3rd year coming up. On the other hand, if you think she is good, you might consider rearing some queens from her first. I tend to believe locally raised queens are better acclimated to the area than queens bought from the South. I have no evidence to back it up, just a personal opinion.