A study completed by the University of North Carolina Department of Psychiatry found that subjects with eating disorders of any type, including anorexia nervosa, bulimia nervosa, binge eating disorder, and purging disorder, had increased rates of smoking and higher nicotine dependence compared to controls [3]
Siegel DA, Jatlaoui TC, Koumans EH, Kiernan EA, Layer M, Cates JE, et al
Make sure to choose a device based on your specific needs (and remember that an activated carbon filter is just as important if you want to combat cigarette smoke odours!)
You can go for a minimalistic black font on white background, colourful handwriting that looks classy even by itself or perhaps a message with a patterned or photographic background