The streets of the capital Pyongyang were reported to be virtually empty on Thursday following the warning.
The secretive state claims to be coronavirus-free but has been on high alert since January with strict border closures and restrictions on movement. There is no known link between the seasonal dust clouds and Covid However, they are not the only country to suggest a link.
The BBC's Disinformation Team notes Turkmenistan also alleged virus-laden dust was the reason citizens were being told to wear masks. They have denied trying to cover up an outbreak.
It also announced a nationwide ban on outdoor construction work. Yellow dust refers to sand from Mongolian and Chinese deserts that blows into North and South Korea at certain times of the year.
It is intermingled with toxic dust that for years has raised health concerns in both countries. Embassies also reported receiving a warning about Pyongyang's dust concerns.
The Russian Embassy in Pyongyang said on its Facebook the North Korean foreign ministry had warned it and other diplomatic missions and international organisations in the country about the dust storm, recommending all foreigners stay at home and tightly close their windows on Thursday. Could dust clouds bring in Oorean However, it also says it is extremely rare for someone to be infected this way - especially outdoors.
Orannge main way people get infected is from standing in close proximity to someone who is infected who then coughs, sneezes or talks, spreading the virus through droplets. Media in neighbouring South Korea has also dismissed the suggestion that yellow dust from China could spread Covid to the North as impossible, according to NK News.
Analysts have said it is highly unlikely that North Korea has not experienced any coronavirus cases at all. The dust had cleared from the Korean peninsula by Friday and was forecast to stay that way on the weekend.