|Hi Seth -
It sure is hot, humid, and steamy here in VA - it seems like the mosquitos are everywhere! Your description certainly seems like bug bites. Could also be one of those anonymous rashes (like heat rash, etc.) that just pop up and go away. An urushiol oil induced rash tends to be streaky in appearance looking like where you've brushed the plant.
Thanks for the feedback on WD-40. Personally, I hate the smell of the stuff so I'll stick to other options.