The White Helmets say three people died while the Britain-based Syria Observatory for Human Rights put the death toll at five. Around 100 people were wounded, it said.
The punishing campaign by the Syrian government and its ally, Russia, has also battered the northwestern province of Idlib, the largest area under opposition control in Syria.
Government or allied forces have fired suspected chlorine-filled munitions on targets in Eastern Ghouta on several occasions in recent weeks, sparking USA warnings of military action.
Regime forces targeted "areas from which the shells were launched in Eastern Ghouta, inflicting heavy losses upon the armed groups' ranks and destroying a number of their mortar launchers", the state-run SANA news agency said.
The US State Department said on Monday it had recorded six suspected chemical attacks in Syria in the past 30 days.
France last month blacklisted companies and nationals it said had links to Syria's alleged chemical programme.
An official statement was released by the Syriac Military Council unilaterally, it read, "While we are trying to complete the liberation of the rest of the Syrian territory from the remnants of terrorists who have committed crimes against the land, people, history and civilization, the barbaric Turkish attack and bombardment continues on the Afrin region for the second week in a row".
U.S. Ambassador Nikki Haley accused Russian Federation on Monday of protecting Syrian President Bashar Assad from responsibility for what she said were multiple chlorine gas attacks on civilians in recent weeks.
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An Associated Press reporter at the Al-Asad base in western Iraq saw troop movements reflecting the account by contractors. According to the report, issued by the Pentagon previous year , some 8,892 United States troops had been deployed in Iraq.
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Britain's economy grew faster than expected at the end of 2017, and financial markets have put a 50-50 chance on a BoE rate hike in May.
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Quite simply, when Wenger can pick Mustafi and Koscielny together, Arsenal concede fewer goals and subsequently win more games. Three assists for Mkhitaryan and a goal for Aubameyang on their home debuts, a 5-1 thrashing of Everton , suggests the former.
Photo in the aftermath of a chlorine gas attack in rebel-held Ghouta area.
Turkey's Armed Forces have received another domestically produced ATAK helicopter, Turkish media reported February 6 quoting the country's military sources.
Over the last 48 hours, the scale and ferocity of attacks has increased dramatically resulting in multiple reports of civilian casualties and airstrikes that have reportedly hit at least three hospitals, including in Ma'aret al Nu'man, Kafr Nabl and Mardikh.
Regime and allied forces are now engaged in military operations against rebels and jihadists in a number of areas, including the northwestern province of Idlib and the outskirts of Damascus.
The Idlib area is home to more than 1.1 million of Syria's 6.5 million internally displaced people, many of whom escaped other formerly opposition-held areas after they were overrun by government forces, according to United Nations figures.
The U.N. says it has a plan to reach 700,000 people with relief in the next two months, if it can get the permission to proceed.
While the fighting is abating in some parts of the country, the humanitarian crisis is still in full swing and aid groups predict a further 1.5 million people will be displaced in 2018.
There was no immediate reaction to the UN's appeal from the regime or any of the other belligerents.