Hmm I haven't seem to have developed any on my windows yet this winter. I know there's some on my car windshield but that's a mix of vaping and smoking from when I used to smoke. Still haven't cleaned it off yet. I drive my car like Ace Ventura with my head out the window so it's all gravy.

I personally do 50-70%pg and 50-30%vg, haven't noticed a film on my 23" monitor as yet