Canola oil is genetically modified rapeseed oil which is free from the pungent smelling of euric acid and it is patented in Canada.
Rapeseed belongs to the family of mustard. Mustard oil contains erucic acid which is dangerous for infants and very small children. Therefore, it is not allowed to use as spice oil in those countries.

The long term health effects of genetically modified food are not established clearly and so you must be very careful. Majority of the countries in our world has yet banned genetically modified food.