posted on Feb, 1 2009 @ 05:07 PM
Totally possible, yes. Folks who work in medicine develop this tendency, too--the distinctive "ketone smell" of diabetics being the first example
that comes to mind.
Also true of urinalysis, which may sound icky but is a fact of life for those who work in labs--there are certain smells associated with specific
bacteria, present in sweat and waste products. UTIs are easy to detect; someone who's had a couple can usually tell by scent before any tests are
done (but we do them anyway, of course).
If you're around that kind of scent a lot, either as part of your job or (one would hope not, but sadly it does happen) due to the illness of someone
you live with... yeah, you learn to identify those diseases by smell.
Hadn't heard of cancer being one of those, before, but it would be more surprising if it weren't, frankly.