What are you talking? Canola oil? You make 0 sense. Olive oil industry is very dodge so maybe you getting some mixed stuff even it says 100% olive oil?
Discussion
Depends of the countries. In Europe you can find high quality olive oil in France, Spain, Italy and other Mediterranean countries. Maybe the best is to find a producer and get small batch, like some people do with honey or coffee
Weird thing i read lately, many "organic" olive oil contain more plastic particles and pfas than regular ones..
Also i saw at the supermarket some brands now test their oil for chemicals and other residues.
Ye I wouldn’t just trust what is written on the bottle. But choosing you do want the virgin oil