since 2009, menthol is the lone exception

GAOs technologies enable its customers in beverage and tobacco product manufacturing industry to effectively track their workforces such as: Production Supervisor, Quality Control Inspector, Machine Operator, Packaging Technician, Line Operator, Warehouse Manager, Process Engineer, Research and Development Specialist, Maintenance Technician, Supply Chain Manager, Packaging Designer, Regulatory Compliance Officer, Materials Handler, Lab Technician, Forklift Operator, Distribution Manager, Sales Representative, Brand Manager, Environmental Health and Safety Coordinator, Production Planner and effectively track operational assets such as: Mixing Tanks, Pasteurizers, Bottle Filling Machines, Canning Machines, Fermentation Tanks, Carbonation Equipment, Filtration Systems, Homogenizers, Labeling Machines, Capping Machines, Conveyor Systems, Quality Control Equipment, Refrigeration Units, Blending Equipment, Packaging Machinery, Cigarette Making Machines, Cigar Rolling Machines, Smokeless Tobacco Processing Equipment, Filter Attachment Machines, Tobacco Cutting Machines, Moistening Equipment, Drying and Curing Chambers, Flavoring and Aroma Application Machines, Storage Silos, Dust Collection Systems, Heat-Sealing Equipment

So, flu and cigarette is definitely a couple you should avoid
Exposure to these chemicals can aggravate asthma, impair the lungs' ability to fight infections and increases your risk of developing bronchitis, influenza and pneumonia