When the Canadian dollar was rising recently to reach parity with the American dollar last summer, the effect was to shield Canadians from the worst of inflation in imported goods, especially those that are priced in terms of the American currency. Now that the Canadian dollar is shedding value relative to the American dollar, the reverse can be expected: Imported goods and commodities will cost Canadians proportionally more, leading to more inflation in Canada.
This can be demonstrated by considering recent price changes in oil in light of currency changes.
The recent peak price of a barrel of oil was US $147.50 on July 11, 2008. On October 17, that price had declined to US $71.97, a decline of 51.21%.