A worker carries empty gas cylinders as he walks past a statue during the lockdown, amid the coronavirus disease (COVID-19) outbreak, in Ronda, southern Spain, April 22, 2020. REUTERS/Jon Nazca

Oxygen cylinders are pictured at an out-of-order oxygen plant of a hospital allocated for the coronavirus patients in preparation for any possible spread of the coronavirus disease (COVID-19), in Sanaa, Yemen April 8, 2020. Picture taken April 8, 2020. REUTERS/Khaled Abdullah

Nishant Pradhan uses a cooking gas cylinder as an alternative tool to workout during the eleventh day of the lockdown imposed by the government amid concerns about the spread of coronavirus disease (COVID-19) outbreak, in Kathmandu, Nepal April 3, 2020. REUTERS/Navesh Chitrakar

Nishant Pradhan uses cooking gas cylinders as an alternative tool to workout during the eleventh day of the lockdown imposed by the government amid concerns about the spread of coronavirus disease (COVID-19) outbreak, in Kathmandu, Nepal April 3, 2020. REUTERS/Navesh Chitrakar

Nishant Pradhan uses a cooking gas cylinder as an alternative tool to workout during the eleventh day of the lockdown imposed by the government amid concerns about the spread of coronavirus disease (COVID-19) outbreak, in Kathmandu, Nepal April 3, 2020. REUTERS/Navesh Chitrakar

Nishant Pradhan uses a cooking gas cylinder as an alternative tool to workout during the eleventh day of the lockdown imposed by the government amid concerns about the spread of coronavirus disease (COVID-19) outbreak, in Kathmandu, Nepal April 3, 2020. REUTERS/Navesh Chitrakar

Nishant Pradhan uses cooking gas cylinders as an alternative tool to workout during the eleventh day of the lockdown imposed by the government amid concerns about the spread of coronavirus disease (COVID-19) outbreak, in Kathmandu, Nepal April 3, 2020. REUTERS/Navesh Chitrakar

Bolivian farmers line up cooking gas cylinders as the country is under a nationwide quarantine to contain the coronavirus disease (COVID-19), in Guaqui near Titicaca lake, Bolivia March 30, 2020. REUTERS/David Mercado

Bolivian farmers line up cooking gas cylinders as the country is under a nationwide quarantine to contain the coronavirus disease (COVID-19), in Guaqui near Titicaca lake, Bolivia March 30, 2020. REUTERS/David Mercado

Workers load liquefied petroleum gas (LPG) cooking cylinders onto a supply truck outside a distribution centre in Mumbai, India, February 19, 2015. REUTERS/Shailesh Andrade/File Photo

A man carries a gas cylinder as he waits to purchase cooking gas after India ordered a 21- day nationwide lockdown to limit the spreading of coronavirus disease (COVID-19) in Mumbai, India March 27, 2020. REUTERS/Francis Mascarenhas

A man carries a gas cylinder past a queue of people waiting to purchase cooking gas after India ordered a 21- day nationwide lockdown to limit the spreading of coronavirus disease (COVID-19) in Mumbai, India ,March 27, 2020. REUTERS/Francis Mascarenhas

People sit on top of empty cooking gas cylinders, waiting to buy the gas, amid fears of scarcity due to coronavirus disease (COVID-19) outbreak, in Kathmandu, Nepal March 23, 2020. REUTERS/Navesh Chitrakar

A girl pushes a cooking gas cylinder at a camp for people recently displaced by fighting in Yemen's northern province of al-Jawf between government forces and Houthis, in Marib, Yemen March 8, 2020. Picture taken March 8, 2020. REUTERS/Ali Owidha

A steelworker cleans a cylinder at the plant of German steel company Salzgitter AG in Salzgitter, Germany March 2, 2020. REUTERS/Fabian Bimmer TPX IMAGES OF THE DAY

A steelworker cleans a cylinder at the plant of German steel company Salzgitter AG in Salzgitter, Germany March 2, 2020. REUTERS/Fabian Bimmer

A customer checks the balance of her M-Gas cylinder inside her house at the Mukuru slum in Nairobi, Kenya January 29, 2020. Picture taken January 29, 2020. REUTERS/Njeri Mwangi

M-Gas cooking gas cylinders are arranged inside a container at a depot near the Mukuru slum in Nairobi, Kenya January 29, 2020. Picture taken January 29, 2020. REUTERS/Njeri Mwangi

Regina Mutuku, 52, checks the balance of her M-Gas cylinder inside her house at the Mukuru slum in Nairobi, Kenya January 29, 2020. Picture taken January 29, 2020. REUTERS/Njeri Mwangi

A worker arranges M-Gas cooking gas cylinders at a depot near the Mukuru slum in Nairobi, Kenya January 29, 2020. Picture taken January 29, 2020. REUTERS/Njeri Mwangi

Palestinians wait to fill cylinders with cooking gas in Rafah in the southern Gaza Strip January 21, 2020. REUTERS/Ibraheem Abu Mustafa

Palestinians wait to fill cylinders with cooking gas in Rafah in the southern Gaza Strip January 21, 2020. REUTERS/Ibraheem Abu Mustafa

Palestinians wait to fill cylinders with cooking gas in Rafah in the southern Gaza Strip January 21, 2020. REUTERS/Ibraheem Abu Mustafa

A Palestinian woman waits to fill cylinders with cooking gas in Rafah in the southern Gaza Strip January 21, 2020. REUTERS/Ibraheem Abu Mustafa

A Palestinian man waits to fill a cylinder with cooking gas in Rafah in the southern Gaza Strip January 21, 2020. REUTERS/Ibraheem Abu Mustafa

A Palestinian boy in a truck looks on as he waits to fill cylinders with cooking gas in Rafah in the southern Gaza Strip January 21, 2020. REUTERS/Ibraheem Abu Mustafa

A Palestinian man on a motorcycle waits to fill a cylinder with cooking gas in Rafah in the southern Gaza Strip January 21, 2020. REUTERS/Ibraheem Abu Mustafa

A demonstrator holds a mockup of a gas cylinder next to police officers during a protest against a government agreement to import natural gas from Israel, in Amman, Jordan, January 3, 2020. A sign on a model reads "The enemy's gas is occupation". REUTERS/Muhammad Hamed

A demonstrator holds a mockup of a gas cylinder during a protest against a government agreement to import natural gas from Israel, in Amman, Jordan, January 3, 2020. The model reads: "The enemy's gas is occupation". REUTERS/Muhammad Hamed

People carry a gas cylinder after their shop was set on fire during a protest against the Citizenship Amendment Bill, a bill that seeks to give citizenship to religious minorities persecuted in neighbouring Muslim countries, on Wednesday night in Gomati district in the eastern state of Triupura, India, December 13, 2019. REUTERS/Jayanta Dey

People line up to get a gas cylinder near petrol plant of Senkata, that normalizes fuel distribution in El Alto outskirts of La Paz, Bolivia, November 23, 2019. REUTERS/David Mercado

A woman stands next to gas cylinders near petrol plant of Senkata, that normalizes fuel distribution in El Alto outskirts of La Paz, Bolivia, November 23, 2019. REUTERS/David Mercado

A woman carries a gas cylinder near petrol plant of Senkata, that normalizes fuel distribution in El Alto outskirts of La Paz, Bolivia, November 23, 2019. REUTERS/David Mercado

Women carry gas cylinders near petrol plant of Senkata, that normalizes fuel distribution in El Alto outskirts of La Paz, Bolivia, November 23, 2019. REUTERS/David Mercado

Trucks with gas cylinders and a gasoline tank truck are seen next petrol plant of Senkata outskirts of La Paz, Bolivia, November 23, 2019. REUTERS/David Mercado

Workers stand next to gas cylinders near petrol plant of Senkata, that normalizes fuel distribution in El Alto outskirts of La Paz, Bolivia, November 23, 2019. REUTERS/David Mercado

An aerial view shows people blocking a road with gas cylinders due a shortage in La Paz, Bolivia, November 20, 2019. REUTERS/David Mercado

A man holds the cylinder hat of German Nazi leader Adolf Hitler at the auction house Hermann Historica in Munich, Germany, November 20, 2019. Several hundred Nazi-era objects were up for auction. REUTERS/Andreas Gebert

The cylinder hat of Adolf Hitler is seen on a table at the auction house Hermann Historica in Munich, Germany, November 20, 2019. Several hundreds of Nazi objects were up for auction. REUTERS/Andreas Gebert

A woman waits to get gas cylinders refilled due to a blocked petrol plant of Senkata, in La Paz, Bolivia, November 20, 2019. REUTERS/David Mercado

People line up to get gas cylinders refilled due to a blocked petrol plant of Senkata, in La Paz, Bolivia, November 20, 2019. REUTERS/David Mercado

People line up to get gas cylinders refilled due to a blocked petrol plant of Senkata, in La Paz, Bolivia, November 20, 2019. REUTERS/David Mercado

People line up to get gas cylinders refilled due to a blocked petrol plant of Senkata, in La Paz, Bolivia, November 20, 2019. REUTERS/David Mercado

A man carries a gas cylinder in El Alto, near La Paz, Bolivia November 17, 2019. REUTERS/Henry Romero

A man carries a gas cylinder in El Alto, near La Paz, Bolivia November 17, 2019. REUTERS/Henry Romero

A boy collects red foam balls that are powered by air circulating at high speed in a glass cylinder during the first day of Europe's leading digital games fair Gamescom, which showcases the latest trends of the computer gaming scene in Cologne, Germany, August 21, 2019. REUTERS/Wolfgang Rattay

A man walks past gas cylinders in a flooded colony in Kathmandu, Nepal July 12, 2019. REUTERS/Navesh Chitrakar

Gas cylinders float at a flooded colony in Kathmandu, Nepal July 12, 2019. REUTERS/Navesh Chitrakar

A Rohingya refugee man carries a Liquid Petrolium Gas (LPG) cylinder at the Balukhali camp in Cox's Bazar, Bangladesh, April 8, 2019. REUTERS/Mohammad Ponir Hossain

An employee stands in front of gas cylinders at a Castorama improvement store, operated by Kingfisher in Ezanville near Paris, France March 21, 2019. REUTERS/Benoit Tessier

A steel cylinder is moved at the plant of German steel company Salzgitter AG in Salzgitter, Germany March 5, 2019. REUTERS/Fabian Bimmer

A steel cylinder is moved at the plant of German steel company Salzgitter AG in Salzgitter, Germany March 5, 2019. REUTERS/Fabian Bimmer

A steel cylinder is moved at the plant of German steel company Salzgitter AG in Salzgitter, Germany March 5, 2019. REUTERS/Fabian Bimmer

A steel cylinder is moved at the plant of German steel company Salzgitter AG in Salzgitter, Germany March 5, 2019. REUTERS/Fabian Bimmer

A steel cylinder is moved at the plant of German steel company Salzgitter AG in Salzgitter, Germany March 5, 2019. REUTERS/Fabian Bimmer

A steelworker cleans a steel cylinder at the plant of German steel company Salzgitter AG in Salzgitter, Germany March 5, 2019. REUTERS/Fabian Bimmer

A steelworker cleans a steel cylinder at the plant of German steel company Salzgitter AG in Salzgitter, Germany March 5, 2019. REUTERS/Fabian Bimmer

A steelworker cleans a steel cylinder at the plant of German steel company Salzgitter AG in Salzgitter, Germany March 5, 2019. REUTERS/Fabian Bimmer

A steelworker cleans a steel cylinder at the plant of German steel company Salzgitter AG in Salzgitter, Germany March 5, 2019. REUTERS/Fabian Bimmer

Glass cylinders used to make condoms are seen in the Condomi museum in Vienna, Austria November 14, 2018. REUTERS/Leonhard Foeger