California and New York have made similar efforts to curb sales
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[13] Philip Morris Circular No 390, December 31, 1969,, retrieved from Truth Tobacco Industry Documents [14] Internal memo dated October 18, 1971 - Multifilter test markets,, retrieved from Truth Tobacco Industry Documents [15] 'Brand Performance in the Cigarette Industry and the Advantage to Early Entry, 1913-74' by Ira Taylor Whitten [17] 'Mini biography of Walter Landor', retrieved from Truth Tobacco Industry Documents [17] 'Materials Department, Philip Morris, Europe' January 1974, retrieved from Truth Tobacco Industry Documents [18] 'Life-course Smoking Behavior Patterns and National Context in Ten Countries' by Dean Reginald Lillard, Rebekka Christopoulou, published by Oxford University Press in 2015, page 255
It doesn't work against viruses