Believe it or not, her mother died of lung cancer (non-smoker).

FORBES: Tim Hasselbeck: QBs 'Don't Like' Breast Cancer Footballs Either

Another image of Miss Knox at the time of the murder is that of a non-drinker and non-smoker, who declared her favourite pursuits to be yoga and backpacking.

BBC: Profile: Amanda Knox

The artist behind the pieces, who is not a smoker, works in a non-journalism capacity for a media organization.

FORBES: L.A. Street Artist's Unfiltered Take on Facebook: 'Social Cigarettes'