https://www.livemint.com/companies/news/indigo-introduces-female-friendly-seat-selection-during-web-check-in-announces-special-flight-sale-starting-at-rs-1199-11716960304002.html
IndiGo Airlines has launched a new feature during web check-in that allows female passengers to see which seats have been pre booked by other female passengers. This initiative aims to make air travel a more comfortable and safe experience for women, in that they can choose to sit away from men. If you are a male passenger wishing to pre book, the seats immediately around a female's pre booked seat will be blanked out.
Many complaints are made from women of being harassed or sexually assaulted whilst on their journey and the fact you can't always change your seat mid flight, (and you most definitely cannot exit the plane to get away), is a compounding factor. Of course, you can always alert aircraft staff, but this would be after the event.
I don't know if this initiative will work but I like the idea. My own personal experience of flying is feeling very awkward getting out of my seat and having to inch past a seated male passenger, in order to go to the loo. It almost feels like you're having to do a lap dance! The same awkwardness applies should the man want to get out of , or get back into, his seat. For this reason alone I would opt to sit away from men.