People wearing face masks are now a common sight on the streets of some Asian cities.
Airlines have been advised to stock the planes with gloves and face masks in case of an emergency.
Two people were arrested for failing to remove face masks and two for assault, obstructing and resisting a police officer.
"Our workers wear goggles, face masks, head cover and protective clothing, " says Ananta Saikia, whose firm is the pepper's sole exporter.
Hanging off lampposts and standing atop telephone booths, people were brandishing everything from white paper gloves to black hats and face masks.
But I think two face masks and four hats, or anything else that makes a person look like a bulbous mushroom, are perfectly acceptable.
The United Kingdom's Health Protection Agency also told CNN that the use of face masks was not necessary or recommended for protection against the swine flu virus.
So what about wearing face masks or using alcohol-based sanitizers?
He leads a committee of supply-chain executives, currently focused on 18 "high-impact" opportunities to improve efficiency in making major products, including respiratory face masks, stethoscopes and reflective material for highway signs.
Health-care workers say that the respirators are uncomfortable and more difficult to wear than face masks, and that they make it hard to speak with patients, among other problems, he explains.
He told MPs they included enhanced airport checks, an expansion of anti-viral stocks from 35 million to 50 million by the end of May, extra face masks and information leaflets for every family.
The smog has even reached southern Thailand, where face-masks have been distributed to the public in one province.
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Every school has now been supplied with thermometers, face-masks and on-call doctors.
"They are showing altered pictures of their own face using masks like that from 'V for Vendetta', " said Mok, referring to the 2005 film updating the story of Guy Fawkes, who tried to destroy Parliament building in England in the 17th Century.
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