It is more likely that a canadian scientist would say, what are there people living out there where this stuff is grown, He would probably say well not enough to worry about and leave it at that.
Population urban and rural, by province and territory
population urban and rural in canada.
Then this graph shows how rural populations are changing as well in one of our primary canola growing provinces.
And it has changed more since then.
There are certainly people in Canada who try to stay indoors during canola flowering and know what it is that causes the allergic reaction which they are suffering. Basically anyone suffering such allergies here is a farm family member. Wouldn't do to overlook an important aspect like that.