Even though I wan't to comfort you, I still believe the [material] is
not safe to be around. But there are many possibilities as to what
could have been the cause of it or if it in fact was v* rather than
actual vegetable soup that someone dumped out of their Thermos. It's
just not worth the time trying to guess what it was or why it was
there. Or if it will have any effect on you. Cheer up buttercup.