Hi kelikool!
From experience I have found girls tend to smell more.
I have 2 hamsters at the moment, both male. Stormy is 3 years old and Commando is 9 months. We had a male previous to getting Commando, he was called Buddy and lived til just before his 5th birthday. Before that I had a female called Bailey and before her I had a male called Harley. I love Hamsters (in case you hadn't guessed! Lol!) hope you get a lovely one. Here is a website I found, hope it's useful. Daffi x
http://www.hamsterhideout.com/allabthams.html