Is there a world record for chewing tobacco

Guinness World Records has no world record listing for chewing tobacco. Here’s what we found relating tobacco:

First recorded use of tobacco

Mayan carvings dating back to c. 600 BC depict the practice of tobacco smoking, though the cultivation of the tobacco plant, probably goes back much further, perhaps to 5000¬6000 BC.
The plant would originally have been burnt during ceremonies, but over the millennia its uses evolved. It was chewed, used as a pain killer, traded and c. 1000 BC, its leaves were first smoked to seal deals, settle a peace or simply for pleasure.

City of Buenos Aires and LALCEC team up for World No Tobacco Day record attempt

On Friday, May 31, to celebrate "World No Tobacco Day," the Government of the City of Buenos Aires and LALCEC (La Liga Argentina de Lucha Contra el Cancer) will join forces to raise awareness about the dangers and illnesses caused by cigarettes to both active and passive smokers.
From 8 a.m. to 4 p.m. on the busy, pedestrian Florida Street in the heart of the South American capital city, they will attempt to break the GUINNESS WORLD RECORDS mark for the most carbon monoxide tests taken in 8 hours.

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Tuesday, August 08 2017
Source: http://www.guinnessworldrecords.com/world-records/first-recorded-use-of-tobacco