What a weird thing to write?
care to explain?
If they would have been an effective weapon, why do you think anybody would have tried to forbid them? Death by gas is not more or less inhuman than other deaths on the battlefield.
They were inefficient as weapons - the wind endangers own soldiers, soldiers with gas masks were safe, but civilians killed, and at that time this was considered something bad.
But that is - by the evidence - a false claim. By the evidence, Assad has nothing to lose and all of the benefits of State terrorism to gain from whatever such actions he can manage.
Assad has already had a serious loss. The counteroffensive was stopped for several days. And the reason for this - Trump's unpredictability - was well-known before, you have explained me a lot that he can start wars in an unpredictable way. Moreover, the loss on the front of information warfare was certain and sure. You have not presented any evidence, beyond a link to Saddam, who was in quite different circumstances when he used it, in particular he was backed by the US.
But "military advantage" is not what Saddam needed from them, or Assad - and certainly not the point of such gas attacks as Assad has been accused of.
Saddam has mainly used gas in the war with Iran, and afaik he has at least hoped for getting military advantages. At least in
http://www.salon.com/2013/08/26/cia_helped_saddam_gas_iran_in_88/ suggests that some military needs - to prevent some Iranian attack on weak points of the Iraq troops - was at least relevant:
In 1988, during the waning days of Iraq’s war with Iran, the United States learned through satellite imagery that Iran was about to gain a major strategic advantage by exploiting a hole in Iraqi defenses. U.S. intelligence officials conveyed the location of the Iranian troops to Iraq, fully aware that Hussein’s military would attack with chemical weapons, including sarin, a lethal nerve agent.
What Assad has been accused of is clearly propaganda nonsense, thus, not relevant. That would be circular reasoning - to try to prove that the propaganda is correct by reference to that propaganda. The point of such gas attacks was to accuse Assad of having done them. That they made no sense militarily was in all cases obvious, so not even the accusers could seriously claim it.
Depends on how you define "military advantage".
Genocide by Chem. weapons certainly offers a military advantage as does the fear generated by the threat of " fumigation".
A city such as Aleppo can be rid of rebels yet the building structures can remain intact with minimal casualties for Assads forces.
No, because the wind endangers neighbor regions, and the major neighbor of East Aleppo was government-held West Aleppo, with a lot of pro-Assad civilians. So, gassing East Aleppo would make sense only in horrible propaganda fantasies about evil Assad, which is, of course, the picture presented by the Western media.
Anyway, Assad was not even claimed to have used such amounts of gas that this could have been a point. Note also that to take advantage of gassing, one would have to take the structures immediately after this, thus, one needs troops nearby, but these troops would be endangered.