we don't have the vine stuff around here, only small plants. I had not grown up around it, so never knew what to look for until I was in my mid 50's. I was weedwhipping some trials sections, 90+F, boots and stubbies only. no shirt. wiping sweat with towel on legs, arms, back, chest, face, etc, etc. Weed whipping pureed that stuff into a mist in the air. couple days later, started blisters. couple more days went to dr. and found out what it was. covered maybe 60-75% of my body exposed skin. and it was bad. not super painful, but oozing every inch of skin continuinly. Very thankful didn't hit my lungs.
Have had it several times since, just a few square inches of skin usually, but I am pretty over sensitive to it now. and also hyper vigilante on watching for it.
There is a special expensive soap to remove the oil, which I now carry in all my vehicles and med kits. needs to be used within an hour or so of exposure. There is also an ivy creme as preventative, but Idon't think that would work unless covered entire body.
the hot showers helped the itch, but then caused worse blistering.
and, the smoke can be fatal to breathe: it chemically/mechanically burns the lung linings and there is no medical way to counteract it.
I didn't realize the oil hangs on equipment a long time, so that is good to know.
nasty stuff.
k