For those who argue that a Cohen can fly over a cemetery in an aeroplane because the floor of the ‘plane functions as an ohel and blocks the impurity from reaching the passengers, how do they avoid making the floor of the ‘plane an ohel for people on the ground?
Eg if a Cohen is standing well outside a cemetery, but a ‘plane overhead is partly over him and partly over the cemetery, then surely if it’s an ohel he’s now tamei?