EffaxUnisex's Leather Combi Bottle, Brown, 500ml

Does this one also prevent mildew? i know there is a combi mildew-free version, so i wasn't sure if they now add a mildew protectant to this.

I have an older bottle of this. Smells a bit like rubbing alcohol. Is this the normal smell?

Do you leave it on or wipe it off after so many minutes?

Do I need to use leather soap before this using product?