REFILE - CORRECTING MONTH An employee rolls tobacco at the Corona tobacco factory in Havana, Cuba, July 3, 2019. REUTERS/Alexandre Meneghini 

A man holds an electronic cigarette as he vapes at a Vape Shop in Monterrey, Mexico February 1, 2019. Picture taken February 1, 2019. FREUTERS/Daniel Becerril 

A man poses for a picture, as he vapes at home in La Paz, Bolivia, February 2, 2019. REUTERS/David Mercado 

A saleswoman holds an e-cigarette as she demonstrates vaping at the Vape Shop that sells e-cigarette products in Beijing, China January 30, 2019. REUTERS/Thomas Peter 

A sign indicating a tobacconist shop is pictured in Bordeaux, France, September 7, 2018. REUTERS/Regis Duvignau 

Cigarette butts litter the street in Rochefort, France, June 14, 2018. The French government wants to end the bane of discarded cigarette butts and will impose new regulations unless tobacco companies come up with proposals to reduce their number. REUTERS/Regis Duvignau 

Cigarette butts litter the street in Rochefort, France, June 14, 2018. The French government wants to end the bane of discarded cigarette butts and will impose new regulations unless tobacco companies come up with proposals to reduce their number. REUTERS/Regis Duvignau 

A cigarette butt litters the street in Lyon, France, June 14, 2018. The French government wants to end the bane of discarded cigarette butts and will impose new regulations unless tobacco companies come up with proposals to reduce their number. REUTERS/Emmanuel Foudrot 

Cigarette butts litter the street in Lyon, France, June 14, 2018. The French government wants to end the bane of discarded cigarette butts and will impose new regulations unless tobacco companies come up with proposals to reduce their number. REUTERS/Emmanuel Foudrot 

Cigarette butts litter the street in Lyon, France, June 14, 2018. The French government wants to end the bane of discarded cigarette butts and will impose new regulations unless tobacco companies come up with proposals to reduce their number. REUTERS/Emmanuel Foudrot 

Cigarette butts litter paving stones outside a cafe along a pedestrian street in Lyon, France, June 14, 2018. The French government wants to end the bane of discarded cigarette butts and will impose new regulations unless tobacco companies come up with proposals to reduce their number. REUTERS/Emmanuel Foudrot 

No smoking signs are seen on a table in a sign shop in Vienna, Austria March 8, 2018. REUTERS/Leonhard Foeger 

No smoking signs are seen on a table in a sign shop in Vienna, Austria March 8, 2018. REUTERS/Leonhard Foeger 

A Palestinian man fills a cigarette cartridge with locally grown tobacco, near the West Bank city of Jenin October 5, 2017. Picture taken October 5, 2017. REUTERS/Raneen Sawafta 

Cigarettes are seen in this May 24, 2017 illustration photo. To match Special Report PMI-WHO/FCTC REUTERS/Thomas White/Illustration TPX IMAGES OF THE DAY 

Glasses with Chinese spirit baijiu are seen on a bar top at the Capital Spirits Baijiu Bar in Beijing, China June 22, 2017. Picture taken June 22, 2017. REUTERS/Thomas Peter 

Bubbles are seen during the fermentation of sugar cane juice in the process to make a spirit called Clairin, in a traditional distillery in Leogane, Haiti, June 20, 2017. REUTERS/Andres Martinez Casares 

New distillate of absinthe, an alcohol also called the "Green Fairy" that was prohibited to distill from 1910 to 2005 in Switzerland, comes out of the still during the distillation of absinthe in Boveresse in Val de Travers near Neuchatel, Switzerland June 20, 2017. REUTERS/Denis Balibouse 

A man smokes a cigarette whilst working on the reconstruction of the Jiankou section of the Great Wall, located in Huairou District, north of Beijing, China, June 7, 2017. REUTERS/Damir Sagolj SEARCH "SAGOLJ GREAT WALL" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Discarded cigarette butts are seen lodged in a sidewalk grating in Warsaw, Poland June 2, 2017. Picture taken June 2, 2017. REUTERS/Bogdan Popescu 

A man smokes in Budapest, Hungary, May 12, 2017. REUTERS/Laszlo Balogh 

A man smokes in Budapest, Hungary, May 12, 2017. REUTERS/Laszlo Balogh 

A man smokes in Budapest, Hungary, May 12, 2017. REUTERS/Laszlo Balogh 

Pipes are displayed at a tobacco shop in Lima, Peru, May 12, 2017. REUTERS/Mariana Bazo 

A "no smoking" sign is placed on the office building window in the centre of Warsaw, Poland May 12, 2017. REUTERS/Kacper Pempel 

Smoking pipes are seen in a store in Mexico City, Mexico May 12, 2017. REUTERS/Henry Romero 

Smoking pipes are seen in a store in Mexico City, Mexico May 12, 2017. REUTERS/Henry Romero 

Smoking pipes are seen in a store in Mexico City, Mexico May 12, 2017. REUTERS/Henry Romero 

A man holds a cigarette at his home in La Paz, Bolivia May 12, 2017. REUTERS/David Mercado 

A woman lights tobacco foil as she prepares a hookah, a traditional water pipe, along a road in Karachi, Pakistan May 11, 2017. REUTERS/Akhtar Soomro 

A lit cigarette burns in Sydney, Australia, May 11, 2017. REUTERS/Jason Reed 

A lit cigarette burns in Sydney, Australia, May 11, 2017. REUTERS/Jason Reed 

A cigarette burns as an office worker takes a break in Sydney, Australia, May 11, 2017. REUTERS/Jason Reed 

A cigarette butt lies on a street in New York, U.S., May 10, 2017. REUTERS/Shannon Stapleton 

A person smokes a cigarette in Canary Wharf in London, Britain May 10, 2017. REUTERS/Marika Kochiashvili 

Cigarette butts are left in an ashtray at a tram stop in Zurich, Switzerland May 10, 2017. REUTERS/Arnd Wiegmann 

A man holds a cigarette in a market in Islamabad, Pakistan May 10, 2017. REUTERS/Caren Firouz 

A Thai soldier holds a cigarette during an annual live-fire exercise at a military base in Chanthaburi province, Thailand, May 9, 2017. Picture taken May 9, 2017. REUTERS/Athit Perawongmetha 

A closeup photo shows the tightly-packed layers of tobacco leaves in a Cuban cigar, the Romeo y Juliet brand in this case, photographed in Washington, U.S. May 9, 2017. REUTERS/Jonathan Ernst 

A man is reflected in a shop window while smoking with a vaporizer in Boston, Massachusetts, U.S., May 9, 2017. REUTERS/Brian Snyder 

Discarded cigarette butts are seen beneath a sidewalk grating in Manhattan in New York City, May 8, 2017. REUTERS/Mike Segar 

Discarded cigarette butts are seen beneath a sidewalk grating in Manhattan in New York City, May 8, 2017. REUTERS/Mike Segar 

A smoker heats hashish to mix with tobacco and fill back into a cigarette in Peshawar, Pakistan May 8, 2017. REUTERS/Fayaz Aziz 

People smoke cigarettes in a smoking area in Tokyo, Japan, May 8, 2017. REUTERS/Toru Hanai 

A woman lights a cigarette in a park in Brussels, May 7, 2017. REUTERS/Eric Vidal 

People smoke marijuana on the informal cannabis holiday, 4/20, corresponding to the numerical figure widely recognized within the cannabis subculture as a symbol for all things marijuana, on the Common in Boston, Massachusetts, U.S., April 20, 2017. REUTERS/Brian Snyder 

A customer rolls a joint with cannabis bought at Dr Green shop in Lausanne, Switzerland March 17, 2017. REUTERS/Denis Balibouse 

A street vendor holds cigarettes as he serves a consumer in Jakarta, Indonesia, March 15, 2017. REUTERS/Beawiharta 

A man holds a cigarette in Jakarta, Indonesia, March 14, 2017. Picture taken March 14, 2017. REUTERS/Beawiharta 

Army soldiers patrol the streets of Vila Velha, Espirito Santo, Brazil February 9, 2017. REUTERS/Paulo Whitaker 

A heroin addict smokes heroin in Lamu November 21, 2014. Picture taken November 21, 2014. To match KENYA-DRUGS/LAMU REUTERS/Goran Tomasevic (KENYA - Tags: DRUGS SOCIETY TPX IMAGES OF THE DAY) 

A drug addict smokes heroin inside a cave in Farah province February 4, 2015. Farah offers a prime example of Afghanistan's nexus between Islamist militancy, crime, opium and Kabul's feeble grip on power. Residents say problems escalated after foreign troops withdrew in early 2013 and locals in Farah's most lawless areas say the breakdown in order is complete. Picture taken February 4, 2015. To match Insight AFGHANISTAN-OPIUM/ REUTERS/Omar Sobhani (AFGHANISTAN - Tags: DRUGS SOCIETY POLITICS TPX IMAGES OF THE DAY CRIME LAW) 

Abdulahi Yaroow, 13, smokes a cigarette while chewing khat at the same time in Mogadishu August 10, 2014. Grown on plantations in the highlands of Kenya and Ethiopia, tonnes of khat, or qat, dubbed "the flower of paradise" by its users, are flown daily into Mogadishu airport, to be distributed from there in convoys of lorries to markets across Somalia. Britain, whose large ethnic Somali community sustained a lucrative demand for the leaves, banned khat from July as an illegal drug. This prohibition jolted the khat market, creating a supply glut in Somalia and pushing down prices, to the delight of the many connoisseurs of its amphetamine-like high. Picture taken August 10, 2014. REUTERS/Feisal Omar (KENYA - Tags: AGRICULTURE BUSINESS LAW)

ATTENTION EDITORS: PICTURE 10 OF 16 FOR WIDER IMAGE PACKAGE 'KHAT - SOMALIA'S PARADISE FLOWER'
TO FIND ALL IMAGES SEARCH 'KHAT OMAR' 

Nicotiana benthamiana plants are pictured at Medicago greenhouse in Quebec City, August 13, 2014. REUTERS/Mathieu Belanger (CANADA - Tags: HEALTH) 

An worker inspects the Nicotiana benthamiana plants at Medicago greenhouse in Quebec City, August 13, 2014. REUTERS/Mathieu Belanger (CANADA - Tags: HEALTH) 

A participant practices rolling a joint at the Cannabis Carnivalus 4/20 event in Seattle, Washington April 20, 2014. Thousands of marijuana enthusiasts gathered in Colorado and Washington state over the weekend for an annual celebration of cannabis culture with rallies, concerts and trade shows in the first two states to legalize recreational marijuana. REUTERS/Jason Redmond (UNITED STATES - Tags: POLITICS DRUGS SOCIETY) 

Extinguished cigarettes are seen in an ashtray at the Shanghai Railway Station December 23, 2013. REUTERS/Aly Song (CHINA - Tags: HEALTH SOCIETY) 

A worker sorts cigars at the H. Upmann factory in Havana on March 1, 2013. Sales of Cuban cigars increased by $15 million dollars last year, hitting a total of $416 million, according to Cuba's state-run tobacco company, Habanos SA. That figure doesn't include any sales in the world's largest cigar market, the U.S., where it is still illegal to sell Cuban cigars. Picture taken March 1, 2013. REUTERS/Desmond Boylan (CUBA - Tags: SOCIETY BUSINESS) 

A man uses an E-cigarette, an electronic substitute in the form of a rod, slightly longer than a normal cigarette, in this illustration picture taken in Paris, March 5, 2013. A changeable filter contains a liquid with nicotine and propylene glycol. When the user inhales as he would when smoking, air flow is detected by a sensor and a micro-processor activates an atomizer which injects tiny droplets of the liquid into the flowing air, producing a vapour. The E cigarette is powered by a rechargeable battery. REUTERS/Christian Hartmann (FRANCE - Tags: HEALTH SOCIETY SCIENCE TECHNOLOGY) 

A drug addict smokes heroin on the banks of a river in Kabul January 18, 2013. REUTERS/Mohammad Ismail (AFGHANISTAN - Tags: SOCIETY DRUGS TPX IMAGES OF THE DAY)