Hell yes, and burning it is sure to create dioxins which are carcinogenic too.
You can get dioxins when burning vinyl chloride polymers (“poly vinyl chloride”), but not the vinyl chloride monomer, if my chemistry degree serves me correctly.
AP quotes two different experts warning about dioxins from this incident. Did they get it wrong?
Yes, I disagree with the professor. I think you will get very little dioxin contamination from burning vinyl chloride monomer in atmospheric conditions.