I am thinking of having a rescuse green iguana, advice needed!?

My partner and I have a lot of experience between us with lizards, and are now thinking of adopting a rescue green iguana. I have heard that they are aggresive towards female's. Some say it is perfume, some say its when girls are on periods. The iguana i have seen is male. Does anyone have experience, or a FACTUAL website maybe????? Any answers appreciated!!!