Julia says there's a faint smell something nasty in there, but she doesn't think it permeates through the rest of the building.

朱莉娅说那里有一股微弱气味，但她认为它会渗透到大楼方。

There is a faint smell of something nasty in there, but I don't think it permeates through the rest of the building, do you?

朱莉娅：里面有一股微弱气味，但我认为它会渗透到大楼方， 是吗？

Giles says that he doesn't think the nasty smell permeates through the rest of the building, but there are different nasty smells in other parts of the building.

吉尔斯说认为气味会渗透到大楼余部分，但大楼部分有同气味。