Canada's $100 bill. Some think it smells sweet. Bank of Canada hide caption toggle caption Bank of Canada The Two-Way Does Canada's $100 Bill Smell Like Maple Syrup? Many Say So May 28, 2013 After a new version of the bill was introduced in 2011, the Bank of Canada heard from dozens of people who were convinced that it included a maple-scented scratch-and-sniff patch. The bank says it didn't do that. But imagine: What might be a good scent for U.S. bills?