看了对话原文依旧不明所以...A:You can hardly expect smokers to give up th

看了对话原文依旧不明所以...
A:You can hardly expect smokers to give up the simple pleasure of a cigar or cigarette after a good meal in a restaurant.
B:Quiet the contrary!You can hardly expect non-smokers ruined by selfish and thoughtless smokers!
问题是问从对话中得到了什么信息?
答案选的是：Smokers should not ruin non-smokers's pleasure.
对于B说的,我觉得是：“正相反,你别指望非烟民会被那些自私不为他人着想的烟民毁了!”
可能是我理解不了“外国人的思维模式”,所以看了对话也不明白为什么选那个答案
这跟烟民不能毁了非烟民的快乐有什么关系啊?