So, you a Russian troll or do you just read their news?
We KNOW that Syria has chemical weapons meant to use against its enemies because
it publicly admitted so.
We know that Syria uses banned cluster munitions and barrel bombs to commit human rights atrocities because it refuses to sign onto the treaty banning them.
So you want us to believe that Syria is perfectly happy to commit human rights atrocities with other weapons, and perfectly willing to manufacture chemical weapons in order to commit atrocities with them, and you want us to believe there's obvious evidence of chemical weapons being used against citizens who oppose Assad's rule, but you want to believe that it's not Assad using the weapons he admits he owns because....Russia told you not to believe it?
So are you gonna claim that the Organisation for the Prohibition of Chemical Weapons (an independent international NGO), the OPCW-UN Joint Investigative Mechanism, the BBC and the United States are all part of an intentional conspiracy together?
And that Russian spin.

"It wasn't a chemical bomb, it was just a regular bomb that landed on a bunch of chemical weapons, what luck!"
Russia and Syria didn't even bother to get the same cover story.