The original report comes from Al Jazeera (HT Gateway Pundit via frequent home blog commenter dscott), so caution is advised. But the related video appears to be from an independent source, and the IB Times in the UK is reporting the related attack as an actual event.
According to IBT: "The regime of Syrian President Bashar al-Assad has been accused of resorting to chemical weapons after seven people died from poisonous gas fumes in an assault on Homs." From what I could tell, as of shortly before 10 a.m. ET, the U.S. establishment press had not filed a story. More from IBT after the jump (bolds are mine):