What is the test for unusual danger in the context of food safety legislation?

Allbright J. in Dehmke v. Westfair Foods Ltd. (supra) commented on unusual danger at para. 27: ¶ 27 The term "unusual danger" throughout the jurisprudence has been held to be fact‑specific depending upon the nature of the premises visited, the class of person to which the invitee belongs, and the reasons for which the invitee entered the premises.