I guess you could say that knowledge can be "dangerous" to our spiritual well being, if you consider what is being said in this chapter.
1Co 8:1 Now concerning food offered to idols: we know that "all of us possess knowledge." "Knowledge" puffs up, but love builds up.
v. 2 If any one imagines that he knows something, he does not yet know as he ought to know.
v. 3 But if one loves God, one is known by him.
v. 6 yet for us there is one God, the Father, from whom are all things and for whom we exist, and one Lord, Jesus Christ, through whom are all things and through whom we exist.
v. 7 However, not all possess this knowledge. But some, through being hitherto accustomed to idols, eat food as really offered to an idol; and their conscience, being weak, is defiled.
v. 9 Only take care lest this liberty of yours somehow become a stumbling block to the weak.
v. 11 And so by your knowledge this weak man is destroyed, the brother for whom Christ died.
v. 12 Thus, sinning against your brethren and wounding their conscience when it is weak, you sin against Christ.
mercy, peace and love
Kat