And if an article I read a few years ago was true...you could tell
your old prof that forensics investigators now commonly find putative
murder scenes strongly smelling of chlorine bleach (to destroy
trace DNA, etc).
Of course, this trend has really taken off with CSI, CSI-Miami,
CSI-New York, etc, etc, ad nauseum.
Not to scare you, but before this, back when I was in college (and before these shows became hits), I used this arguement against why we should not "label" or "register" the bullets fired from a gun.
The arguement being that any bullet fired from a gun can be traced, so all guns should be test fired, and a record kept, and if it matched, guilty, if not, not guilty.
When I explained to my teacher back then (in college, not grad school), that if you gave me just one minuit, I could guarantee the bullet would never match the gun, she resorted to excuses and personal attacks, both professors were wrong, its just dumb to dwell on it.
The professor who was worried about students misusing what they were taught (based on some jokes I made) was concerned for the wrong reasons, the simple solution? Handle it at the admissions level (they did have to interview me).