food handler may chew tobacco in Chewing The History of Oral Tobacco

Its not mechanization

The tobacco leaves used for chewing tobacco products have been cut coarsely

Guangdong Biobank Cohort (GDBC) study Yong-Qiao He, Wen-Qiong Xue, Hua Diao, Ji-Yun Zhan, Ming-Fang Ji, Da-Wei Yang, Yi Zhao, Chang-Mi Deng, Zi-Yi Wu, Ting Zhou, Ying Liao, Mei-Qi Zheng, Wen-Li Zhang, Yi-Jing Jia, Lei-Lei Yuan, Lu-Ting Luo, Dan-Hua Li, Tong-Min Wang, Xia-Ting Tong, Yan Du, Ling-Ling Tang, Jing-Wen Huang, Chang-ling Huang, Zhi-Yang Zhao, Yan-Xia Wu, Lian-Jing Cao, Si-Qi Dong, Fang Wang, Cheng-Tao Jiang, Ruo-Wen Xiao, Wen-Bin Zhang, Xue-Yin Chen, Qiao-Ling Wang, Qiao-Yun Liu, Yue-Ze Zhao, Cao-Li Tang, Lin Ma, Xiao-Hui Zheng, Pei-Fen Zhang, Xi-Zhao Li, Shao-Dan Zhang, Ye-Zhu Hu, Xia Yu, Biao-Hua Wu, Fu-Gui Li, Jian-Hua Wu, Bi-Sen Deng, Xue-Jun Liang, Wei-Hua Jia European Journal of Epidemiology 28

You have to replace it with another healthy habit