[Nadya]

>"problem with girls...when they are in the lab".

This can be read two ways depending how you parse it.

That is, Hunt says:

1. Women fall in love with men (implicitly, to the detriment of the function of the lab) => problem with coed labs

2. Men fall in love with women (implicitly, to the detriment of the function of the lab) => problem with coed labs

[dragonwriter]

Your reading of "the problem with girls...when they are in the lab" requires the sexist assumption that the default state of labs is to include males, such that that a "problem with coed labs" is a "problem with girls...when they are in the lab", because, obviously, there's always going to be men in a lab.

So, either reading is sexist, though it is true that there are different ways in which it can be sexist.