Random FactsCuriousOneJanuary 13, 2017cubic, fact, facts, filters, invented, kleenex, masks, Originally, staycurious, tissues, wereComment Kleenex tissues were originally invented in 1915 as filters for WW1 gas masks. Random FactsCuriousOneJanuary 13, 2017cubic, fact, facts, filters, invented, kleenex, masks, Originally, staycurious, tissues, wereComment
