You've had ferrets for five years and this is the first time you've smelt them spray? You're a lucky guy If the albino is attacking the poley then it's better to not put them together. Usually ferrets are kept together for company but obviously the albino can do without the company. Ferrets can do a great deal of damage to each other in a very short period of time and it is not easy to break them up. Once she's attacked the other one I wouldn't trust her to not kill it later when you aren't around, better safe than sorry.