Have you tried screwing off the cap? The area where folks put the o-ring. We had a thread where someone asked what if we vaped an ant. You could have some foreign object that's smoldering in there. I would hate to think maybe a bug. It could be resin that formed inside as
@OF suggested. I always think about resin dripping down when I'm vaping a shatter sandwich. It hasn't happened to me.
This unit has a 2 year warranty.
You don't want to be breathing in something unhealthy.
Enjoying a little fresh air along with my Solo and the rest of my BooBerry. Perfect weather 80 degrees and a little breeze. No cord to worry about either.
Love my iPad for the same reason.