We've just had a long Summer, and most people haven't been going out much either.
When the weather tuns you'll probably see a lot of people in puffer jackets, nylon (thermoplastic) shells filled with either manmade wadding that is literally smothering our planet eventually, or the more expensive feathers that are often just as cruelly 'harvested' from birds. There's also a lot of faux fur around (some at extortionate prices) that is made of nylon (which is a plastic).
The hate of fur is mostly a political one and not about animal rights. I love most animals more than I love most humans. I not only support many wildlife charities with hard cash but work for them too. I am very familiar with all the arguments on both sides and one of the best things you can do for the planet is wear old or existing clothes of all kinds (high street or designer or vintage) and that includes old furs.
Just a couple of years ago I'd go to work and every other person was wearing a big real fur pom pom on their wool beanie. No idea where all those hats have gone but I guess most of those hats are land fill now as these hats were just a fad. None of those people minded real fur. Nor the stuff around their parkers' hoods which was another fashion now gone. Because these were not seen as luxury items no one bothered these wearers.
Much better for sustainability and honour the lives of animals that went to make that jacket by using it for the length of its usefulness. A hand-me-down coat that is 30 years old is much better for our Earth than a new nylon one.
I have a few furs. I just wear them. As faux fur is everywhere (even though it nylon is plastic and literally chokes the planet) Those that can tell they're real usually have their own those that don't don't. If it's dyed fur it's even harder.
If anyone says anything just tell them you don't know an/or as
@880 said, it's your mother's.