Why doesn't fanny approve of lenina's interest in bernard marx? what is the rumor about bernard?

Question 1:Fanny does not approve the interest of Lenina to Bernard Marx because Fanny thinks Bernard is short and ugly and just strangely roaming all around. Question 2:The rumor about Bernard Marx is that a certain person made a mistake when Bernard was in the bottle and, thinking Bernard was a gamma, that someone put alcohol into Bernard's blood surrogate and that was the reason why Bernard is short.